From 3c5b62d839a034e6ed76cd8194c89b8619d470e1 Mon Sep 17 00:00:00 2001
From: Evgenii Stratonikov <evgeniy@nspcc.ru>
Date: Sat, 29 Jan 2022 16:06:36 +0300
Subject: [PATCH] [#625] morph/client: make method names constant

We don't use custom names and the only place where custom method option
is used it provides the default name and can be omitted.

Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
---
 pkg/morph/client/audit/client.go              | 131 +--------
 pkg/morph/client/audit/get_result.go          |   8 +-
 pkg/morph/client/audit/list_results.go        |  24 +-
 pkg/morph/client/audit/put_result.go          |   4 +-
 pkg/morph/client/balance/balanceOf.go         |   8 +-
 pkg/morph/client/balance/client.go            | 107 +------
 pkg/morph/client/balance/decimals.go          |   8 +-
 pkg/morph/client/balance/transfer.go          |  10 +-
 pkg/morph/client/container/client.go          | 269 +-----------------
 pkg/morph/client/container/delete.go          |   4 +-
 pkg/morph/client/container/eacl.go            |  18 +-
 pkg/morph/client/container/eacl_set.go        |   4 +-
 pkg/morph/client/container/estimations.go     |   8 +-
 pkg/morph/client/container/get.go             |  18 +-
 pkg/morph/client/container/list.go            |  10 +-
 pkg/morph/client/container/load.go            |  36 +--
 pkg/morph/client/container/put.go             |   4 +-
 pkg/morph/client/container/wrapper/wrapper.go |  15 +-
 pkg/morph/client/neofs/bind.go                |   8 +-
 pkg/morph/client/neofs/cheque.go              |   4 +-
 pkg/morph/client/neofs/client.go              |  79 +----
 pkg/morph/client/neofsid/addrm_keys.go        |   8 +-
 pkg/morph/client/neofsid/client.go            |  88 +-----
 pkg/morph/client/neofsid/keys.go              |  10 +-
 pkg/morph/client/netmap/add_peer.go           |   4 +-
 pkg/morph/client/netmap/client.go             | 211 ++------------
 pkg/morph/client/netmap/config.go             |  16 +-
 pkg/morph/client/netmap/epoch.go              |  16 +-
 pkg/morph/client/netmap/innerring.go          |   8 +-
 pkg/morph/client/netmap/netmap.go             |  24 +-
 pkg/morph/client/netmap/new_epoch.go          |   4 +-
 pkg/morph/client/netmap/update_state.go       |   4 +-
 pkg/morph/client/reputation/client.go         | 105 +------
 pkg/morph/client/reputation/get.go            |  12 +-
 pkg/morph/client/reputation/list.go           |  10 +-
 pkg/morph/client/reputation/put.go            |   4 +-
 pkg/morph/client/subnet/admin.go              |   8 +-
 pkg/morph/client/subnet/client.go             |  19 ++
 pkg/morph/client/subnet/clients.go            |   6 +-
 pkg/morph/client/subnet/delete.go             |   2 +-
 pkg/morph/client/subnet/get.go                |   2 +-
 pkg/morph/client/subnet/node.go               |   2 +-
 pkg/morph/client/subnet/nodes.go              |   4 +-
 pkg/morph/client/subnet/put.go                |   2 +-
 44 files changed, 249 insertions(+), 1097 deletions(-)

diff --git a/pkg/morph/client/audit/client.go b/pkg/morph/client/audit/client.go
index 77876363..6ca8d6a7 100644
--- a/pkg/morph/client/audit/client.go
+++ b/pkg/morph/client/audit/client.go
@@ -14,133 +14,18 @@ import (
 // and can lead to panic.
 type Client struct {
 	client *client.StaticClient // static Audit contract client
-
-	*cfg // contract method names
-}
-
-// Option is a client configuration change function.
-type Option func(*cfg)
-
-type cfg struct {
-	putResultMethod, // put audit result method name for invocation
-	getResultMethod, // get audit result method name for invocation
-	listResultsMethod string // list all audit result IDs method name for invocation
-	listByEpochResultsMethod string // list audit result IDs by epoch method name for invocation
-	listByCIDResultsMethod   string // list audit result IDs by epoch and CID method name for invocation
-	listByNodeResultsMethod  string // list audit result IDs by epoch, CID, and node key method name for invocation
 }
 
 const (
-	defaultPutResultMethod          = "put"         // default "put audit result" method name
-	defaultGetResultMethod          = "get"         // default "get audit result" method name
-	defaultListResultsMethod        = "list"        // default "list all audit result IDs" method name
-	defaultListByEpochResultsMethod = "listByEpoch" // default "list audit result IDs by epoch" method name
-	defaultListByCIDResultsMethod   = "listByCID"   // default "list audit result IDs by epoch and CID" method name
-	defaultListByNodeResultsMethod  = "listByNode"  // default "list audit result IDs by epoch, CID and node key" method name
+	putResultMethod          = "put"
+	getResultMethod          = "get"
+	listResultsMethod        = "list"
+	listByEpochResultsMethod = "listByEpoch"
+	listByCIDResultsMethod   = "listByCID"
+	listByNodeResultsMethod  = "listByNode"
 )
 
-func defaultConfig() *cfg {
-	return &cfg{
-		putResultMethod:          defaultPutResultMethod,
-		getResultMethod:          defaultGetResultMethod,
-		listResultsMethod:        defaultListResultsMethod,
-		listByEpochResultsMethod: defaultListByEpochResultsMethod,
-		listByCIDResultsMethod:   defaultListByCIDResultsMethod,
-		listByNodeResultsMethod:  defaultListByNodeResultsMethod,
-	}
-}
-
 // New creates, initializes and returns the Client instance.
-//
-// Other values are set according to provided options, or by default:
-//  * "put audit result" method name: put;
-//  * "list audit results" method name: list.
-//
-// If desired option satisfies the default value, it can be omitted.
-// If multiple options of the same config value are supplied,
-// the option with the highest index in the arguments will be used.
-func New(c *client.StaticClient, opts ...Option) *Client {
-	res := &Client{
-		client: c,
-		cfg:    defaultConfig(), // build default configuration
-	}
-
-	// apply options
-	for _, opt := range opts {
-		opt(res.cfg)
-	}
-
-	return res
-}
-
-// WithPutAuditResultMethod returns a client constructor option that
-// specifies the "put audit result" method name.
-//
-// Ignores empty value.
-func WithPutAuditResultMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.putResultMethod = n
-		}
-	}
-}
-
-// WithGetAuditResultMethod returns a client constructor option that
-// specifies the "get audit result" method name.
-//
-// Ignores empty value.
-func WithGetAuditResultMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.getResultMethod = n
-		}
-	}
-}
-
-// WithListResultsMethod returns a client constructor option that
-// specifies the "list all audit result IDs" method name.
-//
-// Ignores empty value.
-func WithListResultsMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.listResultsMethod = n
-		}
-	}
-}
-
-// WithListByEpochResultsMethod returns a client constructor option that
-// specifies the "list audit result IDs by epoch" method name.
-//
-// Ignores empty value.
-func WithListByEpochResultsMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.listByEpochResultsMethod = n
-		}
-	}
-}
-
-// WithListByCIDResultsMethod returns a client constructor option that
-// specifies the "list audit result IDs by epoch and CID" method name.
-//
-// Ignores empty value.
-func WithListByCIDResultsMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.listByCIDResultsMethod = n
-		}
-	}
-}
-
-// WithListByNodeResultsMethod returns a client constructor option that
-// specifies the "list audit result IDs by epoch, CID, and node key" method name.
-//
-// Ignores empty value.
-func WithListByNodeResultsMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.listByNodeResultsMethod = n
-		}
-	}
+func New(c *client.StaticClient) *Client {
+	return &Client{client: c}
 }
diff --git a/pkg/morph/client/audit/get_result.go b/pkg/morph/client/audit/get_result.go
index 7eef6542..eb0f6169 100644
--- a/pkg/morph/client/audit/get_result.go
+++ b/pkg/morph/client/audit/get_result.go
@@ -33,19 +33,19 @@ func (v *GetAuditResultValue) Result() []byte {
 func (c *Client) GetAuditResult(args GetAuditResultArgs) (*GetAuditResultValue, error) {
 	invokePrm := client.TestInvokePrm{}
 
-	invokePrm.SetMethod(c.getResultMethod)
+	invokePrm.SetMethod(getResultMethod)
 	invokePrm.SetArgs(args.id)
 
 	prms, err := c.client.TestInvoke(invokePrm)
 	if err != nil {
-		return nil, fmt.Errorf("could not perform test invocation (%s): %w", c.getResultMethod, err)
+		return nil, fmt.Errorf("could not perform test invocation (%s): %w", getResultMethod, err)
 	} else if ln := len(prms); ln != 1 {
-		return nil, fmt.Errorf("unexpected stack item count (%s): %d", c.getResultMethod, ln)
+		return nil, fmt.Errorf("unexpected stack item count (%s): %d", getResultMethod, ln)
 	}
 
 	resultBytes, err := client.BytesFromStackItem(prms[0])
 	if err != nil {
-		return nil, fmt.Errorf("could not get byte array from stack item (%s): %w", c.getResultMethod, err)
+		return nil, fmt.Errorf("could not get byte array from stack item (%s): %w", getResultMethod, err)
 	}
 
 	return &GetAuditResultValue{
diff --git a/pkg/morph/client/audit/list_results.go b/pkg/morph/client/audit/list_results.go
index 54271aa7..3e2bfa28 100644
--- a/pkg/morph/client/audit/list_results.go
+++ b/pkg/morph/client/audit/list_results.go
@@ -65,14 +65,14 @@ func (v *ListResultsByNodeArgs) SetNodeKey(key []byte) {
 func (c *Client) ListAuditResults(args ListResultsArgs) (*ListResultsValues, error) {
 	invokePrm := client.TestInvokePrm{}
 
-	invokePrm.SetMethod(c.listResultsMethod)
+	invokePrm.SetMethod(listResultsMethod)
 
 	items, err := c.client.TestInvoke(invokePrm)
 	if err != nil {
-		return nil, fmt.Errorf("could not perform test invocation (%s): %w", c.listResultsMethod, err)
+		return nil, fmt.Errorf("could not perform test invocation (%s): %w", listResultsMethod, err)
 	}
 
-	return parseAuditResults(items, c.listResultsMethod)
+	return parseAuditResults(items, listResultsMethod)
 }
 
 // ListAuditResultsByEpoch performs the test invoke of "list audit result IDs
@@ -80,15 +80,15 @@ func (c *Client) ListAuditResults(args ListResultsArgs) (*ListResultsValues, err
 func (c *Client) ListAuditResultsByEpoch(args ListResultsByEpochArgs) (*ListResultsValues, error) {
 	invokePrm := client.TestInvokePrm{}
 
-	invokePrm.SetMethod(c.listByEpochResultsMethod)
+	invokePrm.SetMethod(listByEpochResultsMethod)
 	invokePrm.SetArgs(args.epoch)
 
 	items, err := c.client.TestInvoke(invokePrm)
 	if err != nil {
-		return nil, fmt.Errorf("could not perform test invocation (%s): %w", c.listByEpochResultsMethod, err)
+		return nil, fmt.Errorf("could not perform test invocation (%s): %w", listByEpochResultsMethod, err)
 	}
 
-	return parseAuditResults(items, c.listByEpochResultsMethod)
+	return parseAuditResults(items, listByEpochResultsMethod)
 }
 
 // ListAuditResultsByCID performs the test invoke of "list audit result IDs
@@ -96,15 +96,15 @@ func (c *Client) ListAuditResultsByEpoch(args ListResultsByEpochArgs) (*ListResu
 func (c *Client) ListAuditResultsByCID(args ListResultsByCIDArgs) (*ListResultsValues, error) {
 	invokePrm := client.TestInvokePrm{}
 
-	invokePrm.SetMethod(c.listByCIDResultsMethod)
+	invokePrm.SetMethod(listByCIDResultsMethod)
 	invokePrm.SetArgs(args.epoch, args.cid)
 
 	items, err := c.client.TestInvoke(invokePrm)
 	if err != nil {
-		return nil, fmt.Errorf("could not perform test invocation (%s): %w", c.listByCIDResultsMethod, err)
+		return nil, fmt.Errorf("could not perform test invocation (%s): %w", listByCIDResultsMethod, err)
 	}
 
-	return parseAuditResults(items, c.listByCIDResultsMethod)
+	return parseAuditResults(items, listByCIDResultsMethod)
 }
 
 // ListAuditResultsByNode performs the test invoke of "list audit result IDs
@@ -112,15 +112,15 @@ func (c *Client) ListAuditResultsByCID(args ListResultsByCIDArgs) (*ListResultsV
 func (c *Client) ListAuditResultsByNode(args ListResultsByNodeArgs) (*ListResultsValues, error) {
 	invokePrm := client.TestInvokePrm{}
 
-	invokePrm.SetMethod(c.listByNodeResultsMethod)
+	invokePrm.SetMethod(listByNodeResultsMethod)
 	invokePrm.SetArgs(args.epoch, args.cid, args.nodeKey)
 
 	items, err := c.client.TestInvoke(invokePrm)
 	if err != nil {
-		return nil, fmt.Errorf("could not perform test invocation (%s): %w", c.listByNodeResultsMethod, err)
+		return nil, fmt.Errorf("could not perform test invocation (%s): %w", listByNodeResultsMethod, err)
 	}
 
-	return parseAuditResults(items, c.listByNodeResultsMethod)
+	return parseAuditResults(items, listByNodeResultsMethod)
 }
 
 func parseAuditResults(items []stackitem.Item, method string) (*ListResultsValues, error) {
diff --git a/pkg/morph/client/audit/put_result.go b/pkg/morph/client/audit/put_result.go
index ae3070e8..5a67a4e8 100644
--- a/pkg/morph/client/audit/put_result.go
+++ b/pkg/morph/client/audit/put_result.go
@@ -25,14 +25,14 @@ func (g *PutAuditResultArgs) SetRawResult(v []byte) {
 func (c *Client) PutAuditResult(args PutAuditResultArgs) error {
 	prm := client.InvokePrm{}
 
-	prm.SetMethod(c.putResultMethod)
+	prm.SetMethod(putResultMethod)
 	prm.SetArgs(args.rawResult)
 	prm.InvokePrmOptional = args.InvokePrmOptional
 
 	err := c.client.Invoke(prm)
 
 	if err != nil {
-		return fmt.Errorf("could not invoke method (%s): %w", c.putResultMethod, err)
+		return fmt.Errorf("could not invoke method (%s): %w", putResultMethod, err)
 	}
 	return nil
 }
diff --git a/pkg/morph/client/balance/balanceOf.go b/pkg/morph/client/balance/balanceOf.go
index 3f904a68..f554bf75 100644
--- a/pkg/morph/client/balance/balanceOf.go
+++ b/pkg/morph/client/balance/balanceOf.go
@@ -35,19 +35,19 @@ func (g *GetBalanceOfValues) Amount() *big.Int {
 func (c *Client) BalanceOf(args GetBalanceOfArgs) (*GetBalanceOfValues, error) {
 	invokePrm := client.TestInvokePrm{}
 
-	invokePrm.SetMethod(c.balanceOfMethod)
+	invokePrm.SetMethod(balanceOfMethod)
 	invokePrm.SetArgs(args.wallet)
 
 	prms, err := c.client.TestInvoke(invokePrm)
 	if err != nil {
-		return nil, fmt.Errorf("could not perform test invocation (%s): %w", c.balanceOfMethod, err)
+		return nil, fmt.Errorf("could not perform test invocation (%s): %w", balanceOfMethod, err)
 	} else if ln := len(prms); ln != 1 {
-		return nil, fmt.Errorf("unexpected stack item count (%s): %d", c.balanceOfMethod, ln)
+		return nil, fmt.Errorf("unexpected stack item count (%s): %d", balanceOfMethod, ln)
 	}
 
 	amount, err := client.BigIntFromStackItem(prms[0])
 	if err != nil {
-		return nil, fmt.Errorf("could not get integer stack item from stack item (%s): %w", c.balanceOfMethod, err)
+		return nil, fmt.Errorf("could not get integer stack item from stack item (%s): %w", balanceOfMethod, err)
 	}
 
 	return &GetBalanceOfValues{
diff --git a/pkg/morph/client/balance/client.go b/pkg/morph/client/balance/client.go
index 74c6b559..1ad2f3ea 100644
--- a/pkg/morph/client/balance/client.go
+++ b/pkg/morph/client/balance/client.go
@@ -1,8 +1,6 @@
 package balance
 
 import (
-	"errors"
-
 	"github.com/nspcc-dev/neofs-node/pkg/morph/client"
 )
 
@@ -16,113 +14,24 @@ import (
 // and can lead to panic.
 type Client struct {
 	client *client.StaticClient // static Balance contract client
-
-	*cfg // contract method names
-}
-
-// ErrNilClient is returned by functions that expect
-// a non-nil Client pointer, but received nil.
-var ErrNilClient = errors.New("balance contract client is nil")
-
-// Option is a client configuration change function.
-type Option func(*cfg)
-
-type cfg struct {
-	transferXMethod, // transferX method name for invocation
-	mintMethod,
-	burnMethod,
-	lockMethod,
-	balanceOfMethod, // balanceOf method name for invocation
-	decimalsMethod string // decimals method name for invocation
 }
 
 const (
-	defaultTransferXMethod = "transferX" // default "transferX" method name
-	defaultMintMethod      = "mint"      // default "mint" method name
-	defaultBurnMethod      = "burn"      // default "burn" method name
-	defaultLockMethod      = "lock"      // default "lock" method name
-	defaultBalanceOfMethod = "balanceOf" // default "balance of" method name
-	defaultDecimalsMethod  = "decimals"  // default decimals method name
+	transferXMethod = "transferX"
+	mintMethod      = "mint"
+	burnMethod      = "burn"
+	lockMethod      = "lock"
+	balanceOfMethod = "balanceOf"
+	decimalsMethod  = "decimals"
 )
 
-func defaultConfig() *cfg {
-	return &cfg{
-		transferXMethod: defaultTransferXMethod,
-		mintMethod:      defaultMintMethod,
-		burnMethod:      defaultBurnMethod,
-		lockMethod:      defaultLockMethod,
-		balanceOfMethod: defaultBalanceOfMethod,
-		decimalsMethod:  defaultDecimalsMethod,
-	}
-}
-
 // New creates, initializes and returns the Client instance.
 //
 // If StaticClient is nil, client.ErrNilStaticClient is returned.
-//
-// Other values are set according to provided options, or by default:
-//  * "balance of" method name: balanceOf;
-//  * decimals method name: decimals.
-//
-// If desired option satisfies the default value, it can be omitted.
-// If multiple options of the same config value are supplied,
-// the option with the highest index in the arguments will be used.
-func New(c *client.StaticClient, opts ...Option) (*Client, error) {
+func New(c *client.StaticClient) (*Client, error) {
 	if c == nil {
 		return nil, client.ErrNilStaticClient
 	}
 
-	res := &Client{
-		client: c,
-		cfg:    defaultConfig(), // build default configuration
-	}
-
-	// apply options
-	for _, opt := range opts {
-		opt(res.cfg)
-	}
-
-	return res, nil
-}
-
-// WithBalanceOfMethod returns a client constructor option that
-// specifies the "balance of" method name.
-//
-// Ignores empty value.
-//
-// If option not provided, "balanceOf" is used.
-func WithBalanceOfMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.balanceOfMethod = n
-		}
-	}
-}
-
-// WithDecimalsMethod returns a client constructor option that
-// specifies the method name of decimals receiving operation.
-//
-// Ignores empty value.
-//
-// If option not provided, "decimals" is used.
-func WithDecimalsMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.decimalsMethod = n
-		}
-	}
-}
-
-// WithTransferXMethod returns a client constructor option that
-// specifies the "transferX" method name.
-//
-// Ignores empty value.
-//
-// If option not provided, "transferX" is used.
-func WithTransferXMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.transferXMethod = n
-		}
-	}
+	return &Client{client: c}, nil
 }
diff --git a/pkg/morph/client/balance/decimals.go b/pkg/morph/client/balance/decimals.go
index 6fa4633e..a09fae2a 100644
--- a/pkg/morph/client/balance/decimals.go
+++ b/pkg/morph/client/balance/decimals.go
@@ -27,18 +27,18 @@ func (d *DecimalsValues) Decimals() int64 {
 func (c *Client) Decimals(args DecimalsArgs) (*DecimalsValues, error) {
 	invokePrm := client.TestInvokePrm{}
 
-	invokePrm.SetMethod(c.decimalsMethod)
+	invokePrm.SetMethod(decimalsMethod)
 
 	prms, err := c.client.TestInvoke(invokePrm)
 	if err != nil {
-		return nil, fmt.Errorf("could not perform test invocation (%s): %w", c.decimalsMethod, err)
+		return nil, fmt.Errorf("could not perform test invocation (%s): %w", decimalsMethod, err)
 	} else if ln := len(prms); ln != 1 {
-		return nil, fmt.Errorf("unexpected stack item count (%s): %d", c.decimalsMethod, ln)
+		return nil, fmt.Errorf("unexpected stack item count (%s): %d", decimalsMethod, ln)
 	}
 
 	decimals, err := client.IntFromStackItem(prms[0])
 	if err != nil {
-		return nil, fmt.Errorf("could not get integer stack item from stack item (%s): %w", c.decimalsMethod, err)
+		return nil, fmt.Errorf("could not get integer stack item from stack item (%s): %w", decimalsMethod, err)
 	}
 
 	return &DecimalsValues{
diff --git a/pkg/morph/client/balance/transfer.go b/pkg/morph/client/balance/transfer.go
index 93b6020b..f5e0ba77 100644
--- a/pkg/morph/client/balance/transfer.go
+++ b/pkg/morph/client/balance/transfer.go
@@ -49,13 +49,13 @@ func (t *TransferXArgs) SetDetails(v []byte) {
 func (c *Client) TransferX(args TransferXArgs) error {
 	prm := client.InvokePrm{}
 
-	prm.SetMethod(c.transferXMethod)
+	prm.SetMethod(transferXMethod)
 	prm.SetArgs(args.sender, args.recipient, args.amount, args.details)
 	prm.InvokePrmOptional = args.InvokePrmOptional
 
 	err := c.client.Invoke(prm)
 	if err != nil {
-		return fmt.Errorf("could not invoke method (%s): %w", c.transferXMethod, err)
+		return fmt.Errorf("could not invoke method (%s): %w", transferXMethod, err)
 	}
 
 	return nil
@@ -89,7 +89,7 @@ func (m *MintPrm) SetID(id []byte) {
 func (c *Client) Mint(args MintPrm) error {
 	prm := client.InvokePrm{}
 
-	prm.SetMethod(c.mintMethod)
+	prm.SetMethod(mintMethod)
 	prm.SetArgs(args.to, args.amount, args.id)
 	prm.InvokePrmOptional = args.InvokePrmOptional
 
@@ -124,7 +124,7 @@ func (b *BurnPrm) SetID(id []byte) {
 func (c *Client) Burn(args BurnPrm) error {
 	prm := client.InvokePrm{}
 
-	prm.SetMethod(c.burnMethod)
+	prm.SetMethod(burnMethod)
 	prm.SetArgs(args.to, args.amount, args.id)
 	prm.InvokePrmOptional = args.InvokePrmOptional
 
@@ -171,7 +171,7 @@ func (l *LockPrm) SetDueEpoch(dueEpoch int64) {
 func (c *Client) Lock(args LockPrm) error {
 	prm := client.InvokePrm{}
 
-	prm.SetMethod(c.lockMethod)
+	prm.SetMethod(lockMethod)
 	prm.SetArgs(args.id, args.user, args.lock, args.amount, args.dueEpoch)
 	prm.InvokePrmOptional = args.InvokePrmOptional
 
diff --git a/pkg/morph/client/container/client.go b/pkg/morph/client/container/client.go
index 7fc51852..a6641dbc 100644
--- a/pkg/morph/client/container/client.go
+++ b/pkg/morph/client/container/client.go
@@ -1,8 +1,6 @@
 package container
 
 import (
-	"errors"
-
 	"github.com/nspcc-dev/neofs-node/pkg/morph/client"
 )
 
@@ -16,276 +14,39 @@ import (
 // and can lead to panic.
 type Client struct {
 	client *client.StaticClient // static Container contract client
-
-	*cfg // contract method names
-}
-
-// ErrNilClient is returned by functions that expect
-// a non-nil Client pointer, but received nil.
-var ErrNilClient = errors.New("container contract client is nil")
-
-// Option is a client configuration change function.
-type Option func(*cfg)
-
-type cfg struct {
-	putMethod, // put container method name for invocation
-	putNamedMethod, // put named container method name for invocation
-	putSizeMethod, // put container size method name for invocation
-	listSizesMethod, // list container sizes method name for invocation
-	getSizeMethod, // get container size method name for invocation
-	deleteMethod, // delete container method name for invocation
-	getMethod, // get container method name for invocation
-	listMethod, // list container method name for invocation
-	setEACLMethod, // set eACL method name for invocation
-	eaclMethod, // get eACL method name for invocation
-	startEstimation,
-	stopEstimation string
 }
 
 const (
-	defaultPutMethod     = "put"     // default put container method name
-	defaultDeleteMethod  = "delete"  // default delete container method name
-	defaultGetMethod     = "get"     // default get container method name
-	defaultListMethod    = "list"    // default list containers method name
-	defaultEACLMethod    = "eACL"    // default get eACL method name
-	defaultSetEACLMethod = "setEACL" // default set eACL method name
+	putMethod     = "put"
+	deleteMethod  = "delete"
+	getMethod     = "get"
+	listMethod    = "list"
+	eaclMethod    = "eACL"
+	setEACLMethod = "setEACL"
 
-	defaultStartEstimation = "startContainerEstimation"
-	defaultStopEstimation  = "stopContainerEstimation"
+	startEstimationMethod = "startContainerEstimation"
+	stopEstimationMethod  = "stopContainerEstimation"
 
-	defaultPutSizeMethod   = "putContainerSize"   // default "put container size" method name
-	defaultListSizesMethod = "listContainerSizes" // default "list container sizes" method name
-	defaultGetSizeMethod   = "getContainerSize"   // default "get container size" method name
+	putSizeMethod   = "putContainerSize"
+	listSizesMethod = "listContainerSizes"
+	getSizeMethod   = "getContainerSize"
 
-	defaultPutNamedMethod = "putNamed" // default put named container method name
+	// PutNamedMethod is method name for container put with an alias. It is exported to provide custom fee.
+	PutNamedMethod = "putNamed"
 )
 
-func defaultConfig() *cfg {
-	return &cfg{
-		putMethod:       defaultPutMethod,
-		deleteMethod:    defaultDeleteMethod,
-		getMethod:       defaultGetMethod,
-		listMethod:      defaultListMethod,
-		setEACLMethod:   defaultSetEACLMethod,
-		eaclMethod:      defaultEACLMethod,
-		startEstimation: defaultStartEstimation,
-		stopEstimation:  defaultStopEstimation,
-
-		putSizeMethod:   defaultPutSizeMethod,
-		listSizesMethod: defaultListSizesMethod,
-		getSizeMethod:   defaultGetSizeMethod,
-
-		putNamedMethod: defaultPutNamedMethod,
-	}
-}
-
 // New creates, initializes and returns the Client instance.
 //
 // If StaticClient is nil, client.ErrNilStaticClient is returned.
-//
-// Other values are set according to provided options, or by default:
-//  * put container method name: Put;
-//  * delete container method name: Delete;
-//  * get container method name: Get;
-//  * list containers method name: List;
-//  * set eACL method name: SetEACL;
-//  * get eACL method name: EACL.
-//  * start estimation method name: startContainerEstimation
-//  * stop estimation method name: stopContainerEstimation
-//  * put container size method name: putContainerSize
-//  * get container size method name: getContainerSize
-//  * list container sizes method name: listContainerSizes
-//
-// If desired option satisfies the default value, it can be omitted.
-// If multiple options of the same config value are supplied,
-// the option with the highest index in the arguments will be used.
-func New(c *client.StaticClient, opts ...Option) (*Client, error) {
+func New(c *client.StaticClient) (*Client, error) {
 	if c == nil {
 		return nil, client.ErrNilStaticClient
 	}
 
-	res := &Client{
-		client: c,
-		cfg:    defaultConfig(), // build default configuration
-	}
-
-	// apply options
-	for _, opt := range opts {
-		opt(res.cfg)
-	}
-
-	return res, nil
+	return &Client{client: c}, nil
 }
 
 // Morph returns raw morph client.
 func (c Client) Morph() *client.Client {
 	return c.client.Morph()
 }
-
-// WithPutMethod returns a client constructor option that
-// specifies the method name of container storing operation.
-//
-// Ignores empty value.
-//
-// If option not provided, "Put" is used.
-func WithPutMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.putMethod = n
-		}
-	}
-}
-
-// WithDeleteMethod returns a client constructor option that
-// specifies the method name of container removal operation.
-//
-// Ignores empty value.
-//
-// If option not provided, "Delete" is used.
-func WithDeleteMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.deleteMethod = n
-		}
-	}
-}
-
-// WithGetMethod returns a client constructor option that
-// specifies the method name of container receiving operation.
-//
-// Ignores empty value.
-//
-// If option not provided, "Get" is used.
-func WithGetMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.getMethod = n
-		}
-	}
-}
-
-// WithListMethod returns a client constructor option that
-// specifies the method name of container listing operation.
-//
-// Ignores empty value.
-//
-// If option not provided, "List" is used.
-func WithListMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.listMethod = n
-		}
-	}
-}
-
-// WithSetEACLMethod returns a client constructor option that
-// specifies the method name of eACL storing operation.
-//
-// Ignores empty value.
-//
-// If option not provided, "SetEACL" is used.
-func WithSetEACLMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.setEACLMethod = n
-		}
-	}
-}
-
-// WithEACLMethod returns a client constructor option that
-// specifies the method name of eACL receiving operation.
-//
-// Ignores empty value.
-//
-// If option not provided, "EACL" is used.
-func WithEACLMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.eaclMethod = n
-		}
-	}
-}
-
-// WithStartEstimationMethod returns a client constructor option that
-// specifies the method name of vote to start container size estimation.
-//
-// Ignores empty value.
-//
-// If option not provided, "startContainerEstimation" is used.
-func WithStartEstimationMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.startEstimation = n
-		}
-	}
-}
-
-// WithStopEstimationMethod returns a client constructor option that
-// specifies the method name of vote to stop container size estimation.
-//
-// Ignores empty value.
-//
-// If option not provided, "stopContainerEstimation" is used.
-func WithStopEstimationMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.stopEstimation = n
-		}
-	}
-}
-
-// WithPutSizeMethod returns a client constructor option that
-// specifies the method name of "put container size" operation.
-//
-// Ignores empty value.
-//
-// If option not provided, "putContainerSize" is used.
-func WithPutSizeMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.putSizeMethod = n
-		}
-	}
-}
-
-// WithListSizesMethod returns a client constructor option that
-// specifies the method name of "list container sizes" operation.
-//
-// Ignores empty value.
-//
-// If option not provided, "listContainerSizes" is used.
-func WithListSizesMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.listSizesMethod = n
-		}
-	}
-}
-
-// WithGetSizeMethod returns a client constructor option that
-// specifies the method name of "get container size" operation.
-//
-// Ignores empty value.
-//
-// If option not provided, "getContainerSize" is used.
-func WithGetSizeMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.getSizeMethod = n
-		}
-	}
-}
-
-// WithPutNamedMethod returns a client constructor option that
-// specifies the method name of "put named container" operation.
-//
-// Ignores empty value.
-//
-// If option not provided, "putNamed" is used.
-func WithPutNamedMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.putNamedMethod = n
-		}
-	}
-}
diff --git a/pkg/morph/client/container/delete.go b/pkg/morph/client/container/delete.go
index 3606a626..30b785e6 100644
--- a/pkg/morph/client/container/delete.go
+++ b/pkg/morph/client/container/delete.go
@@ -42,14 +42,14 @@ func (p *DeleteArgs) SetSessionToken(v []byte) {
 func (c *Client) Delete(args DeleteArgs) error {
 	prm := client.InvokePrm{}
 
-	prm.SetMethod(c.deleteMethod)
+	prm.SetMethod(deleteMethod)
 	prm.SetArgs(args.cid, args.sig, args.token)
 	prm.InvokePrmOptional = args.InvokePrmOptional
 
 	err := c.client.Invoke(prm)
 
 	if err != nil {
-		return fmt.Errorf("could not invoke method (%s): %w", c.deleteMethod, err)
+		return fmt.Errorf("could not invoke method (%s): %w", deleteMethod, err)
 	}
 	return nil
 }
diff --git a/pkg/morph/client/container/eacl.go b/pkg/morph/client/container/eacl.go
index 65ceeb8b..cb3070dc 100644
--- a/pkg/morph/client/container/eacl.go
+++ b/pkg/morph/client/container/eacl.go
@@ -57,43 +57,43 @@ func (g *EACLValues) SessionToken() []byte {
 func (c *Client) EACL(args EACLArgs) (*EACLValues, error) {
 	invokePrm := client.TestInvokePrm{}
 
-	invokePrm.SetMethod(c.eaclMethod)
+	invokePrm.SetMethod(eaclMethod)
 	invokePrm.SetArgs(args.cid)
 
 	prms, err := c.client.TestInvoke(invokePrm)
 	if err != nil {
-		return nil, fmt.Errorf("could not perform test invocation (%s): %w", c.eaclMethod, err)
+		return nil, fmt.Errorf("could not perform test invocation (%s): %w", eaclMethod, err)
 	} else if ln := len(prms); ln != 1 {
-		return nil, fmt.Errorf("unexpected stack item count (%s): %d", c.eaclMethod, ln)
+		return nil, fmt.Errorf("unexpected stack item count (%s): %d", eaclMethod, ln)
 	}
 
 	arr, err := client.ArrayFromStackItem(prms[0])
 	if err != nil {
-		return nil, fmt.Errorf("could not get item array of eACL (%s): %w", c.eaclMethod, err)
+		return nil, fmt.Errorf("could not get item array of eACL (%s): %w", eaclMethod, err)
 	}
 
 	if len(arr) != 4 {
-		return nil, fmt.Errorf("unexpected eacl stack item count (%s): %d", c.eaclMethod, len(arr))
+		return nil, fmt.Errorf("unexpected eacl stack item count (%s): %d", eaclMethod, len(arr))
 	}
 
 	eacl, err := client.BytesFromStackItem(arr[0])
 	if err != nil {
-		return nil, fmt.Errorf("could not get byte array of eACL (%s): %w", c.eaclMethod, err)
+		return nil, fmt.Errorf("could not get byte array of eACL (%s): %w", eaclMethod, err)
 	}
 
 	sig, err := client.BytesFromStackItem(arr[1])
 	if err != nil {
-		return nil, fmt.Errorf("could not get byte array of eACL signature (%s): %w", c.eaclMethod, err)
+		return nil, fmt.Errorf("could not get byte array of eACL signature (%s): %w", eaclMethod, err)
 	}
 
 	pub, err := client.BytesFromStackItem(arr[2])
 	if err != nil {
-		return nil, fmt.Errorf("could not get byte array of eACL public key (%s): %w", c.eaclMethod, err)
+		return nil, fmt.Errorf("could not get byte array of eACL public key (%s): %w", eaclMethod, err)
 	}
 
 	tok, err := client.BytesFromStackItem(arr[3])
 	if err != nil {
-		return nil, fmt.Errorf("could not get byte array of eACL session token (%s): %w", c.eaclMethod, err)
+		return nil, fmt.Errorf("could not get byte array of eACL session token (%s): %w", eaclMethod, err)
 	}
 
 	return &EACLValues{
diff --git a/pkg/morph/client/container/eacl_set.go b/pkg/morph/client/container/eacl_set.go
index 6412f95a..19e16ee7 100644
--- a/pkg/morph/client/container/eacl_set.go
+++ b/pkg/morph/client/container/eacl_set.go
@@ -50,14 +50,14 @@ func (p *SetEACLArgs) SetSessionToken(v []byte) {
 func (c *Client) SetEACL(args SetEACLArgs) error {
 	prm := client.InvokePrm{}
 
-	prm.SetMethod(c.setEACLMethod)
+	prm.SetMethod(setEACLMethod)
 	prm.SetArgs(args.eacl, args.sig, args.pubkey, args.token)
 	prm.InvokePrmOptional = args.InvokePrmOptional
 
 	err := c.client.Invoke(prm)
 
 	if err != nil {
-		return fmt.Errorf("could not invoke method (%s): %w", c.setEACLMethod, err)
+		return fmt.Errorf("could not invoke method (%s): %w", setEACLMethod, err)
 	}
 	return nil
 }
diff --git a/pkg/morph/client/container/estimations.go b/pkg/morph/client/container/estimations.go
index 69deee22..3931df3a 100644
--- a/pkg/morph/client/container/estimations.go
+++ b/pkg/morph/client/container/estimations.go
@@ -30,12 +30,12 @@ func (e *StopEstimation) SetEpoch(v int64) {
 func (c *Client) StartEstimation(args StartEstimation) error {
 	prm := client.InvokePrm{}
 
-	prm.SetMethod(c.startEstimation)
+	prm.SetMethod(startEstimationMethod)
 	prm.SetArgs(args.epoch)
 	prm.InvokePrmOptional = args.InvokePrmOptional
 
 	if err := c.client.Invoke(prm); err != nil {
-		return fmt.Errorf("could not invoke method (%s): %w", c.startEstimation, err)
+		return fmt.Errorf("could not invoke method (%s): %w", startEstimationMethod, err)
 	}
 	return nil
 }
@@ -43,12 +43,12 @@ func (c *Client) StartEstimation(args StartEstimation) error {
 func (c *Client) StopEstimation(args StopEstimation) error {
 	prm := client.InvokePrm{}
 
-	prm.SetMethod(c.stopEstimation)
+	prm.SetMethod(stopEstimationMethod)
 	prm.SetArgs(args.epoch)
 	prm.InvokePrmOptional = args.InvokePrmOptional
 
 	if err := c.client.Invoke(prm); err != nil {
-		return fmt.Errorf("could not invoke method (%s): %w", c.stopEstimation, err)
+		return fmt.Errorf("could not invoke method (%s): %w", stopEstimationMethod, err)
 	}
 	return nil
 }
diff --git a/pkg/morph/client/container/get.go b/pkg/morph/client/container/get.go
index 7a348ca1..5da1fbe5 100644
--- a/pkg/morph/client/container/get.go
+++ b/pkg/morph/client/container/get.go
@@ -57,43 +57,43 @@ func (g *GetValues) SessionToken() []byte {
 func (c *Client) Get(args GetArgs) (*GetValues, error) {
 	invokePrm := client.TestInvokePrm{}
 
-	invokePrm.SetMethod(c.getMethod)
+	invokePrm.SetMethod(getMethod)
 	invokePrm.SetArgs(args.cid)
 
 	prms, err := c.client.TestInvoke(invokePrm)
 	if err != nil {
-		return nil, fmt.Errorf("could not perform test invocation (%s): %w", c.getMethod, err)
+		return nil, fmt.Errorf("could not perform test invocation (%s): %w", getMethod, err)
 	} else if ln := len(prms); ln != 1 {
-		return nil, fmt.Errorf("unexpected stack item count (%s): %d", c.getMethod, ln)
+		return nil, fmt.Errorf("unexpected stack item count (%s): %d", getMethod, ln)
 	}
 
 	arr, err := client.ArrayFromStackItem(prms[0])
 	if err != nil {
-		return nil, fmt.Errorf("could not get item array of container (%s): %w", c.getMethod, err)
+		return nil, fmt.Errorf("could not get item array of container (%s): %w", getMethod, err)
 	}
 
 	if len(arr) != 4 {
-		return nil, fmt.Errorf("unexpected container stack item count (%s): %d", c.getMethod, len(arr))
+		return nil, fmt.Errorf("unexpected container stack item count (%s): %d", getMethod, len(arr))
 	}
 
 	cnrBytes, err := client.BytesFromStackItem(arr[0])
 	if err != nil {
-		return nil, fmt.Errorf("could not get byte array of container (%s): %w", c.getMethod, err)
+		return nil, fmt.Errorf("could not get byte array of container (%s): %w", getMethod, err)
 	}
 
 	sig, err := client.BytesFromStackItem(arr[1])
 	if err != nil {
-		return nil, fmt.Errorf("could not get byte array of container signature (%s): %w", c.getMethod, err)
+		return nil, fmt.Errorf("could not get byte array of container signature (%s): %w", getMethod, err)
 	}
 
 	pub, err := client.BytesFromStackItem(arr[2])
 	if err != nil {
-		return nil, fmt.Errorf("could not get byte array of public key (%s): %w", c.getMethod, err)
+		return nil, fmt.Errorf("could not get byte array of public key (%s): %w", getMethod, err)
 	}
 
 	tok, err := client.BytesFromStackItem(arr[3])
 	if err != nil {
-		return nil, fmt.Errorf("could not get byte array of session token (%s): %w", c.getMethod, err)
+		return nil, fmt.Errorf("could not get byte array of session token (%s): %w", getMethod, err)
 	}
 
 	return &GetValues{
diff --git a/pkg/morph/client/container/list.go b/pkg/morph/client/container/list.go
index 02c1523f..91f97915 100644
--- a/pkg/morph/client/container/list.go
+++ b/pkg/morph/client/container/list.go
@@ -35,19 +35,19 @@ func (l *ListValues) CIDList() [][]byte {
 func (c *Client) List(args ListArgs) (*ListValues, error) {
 	invokePrm := client.TestInvokePrm{}
 
-	invokePrm.SetMethod(c.listMethod)
+	invokePrm.SetMethod(listMethod)
 	invokePrm.SetArgs(args.ownerID)
 
 	prms, err := c.client.TestInvoke(invokePrm)
 	if err != nil {
-		return nil, fmt.Errorf("could not perform test invocation (%s): %w", c.listMethod, err)
+		return nil, fmt.Errorf("could not perform test invocation (%s): %w", listMethod, err)
 	} else if ln := len(prms); ln != 1 {
-		return nil, fmt.Errorf("unexpected stack item count (%s): %d", c.listMethod, ln)
+		return nil, fmt.Errorf("unexpected stack item count (%s): %d", listMethod, ln)
 	}
 
 	prms, err = client.ArrayFromStackItem(prms[0])
 	if err != nil {
-		return nil, fmt.Errorf("could not get stack item array from stack item (%s): %w", c.listMethod, err)
+		return nil, fmt.Errorf("could not get stack item array from stack item (%s): %w", listMethod, err)
 	}
 
 	res := &ListValues{
@@ -57,7 +57,7 @@ func (c *Client) List(args ListArgs) (*ListValues, error) {
 	for i := range prms {
 		cid, err := client.BytesFromStackItem(prms[i])
 		if err != nil {
-			return nil, fmt.Errorf("could not get byte array from stack item (%s): %w", c.listMethod, err)
+			return nil, fmt.Errorf("could not get byte array from stack item (%s): %w", listMethod, err)
 		}
 
 		res.cidList = append(res.cidList, cid)
diff --git a/pkg/morph/client/container/load.go b/pkg/morph/client/container/load.go
index 8b0bdbcf..ebf73867 100644
--- a/pkg/morph/client/container/load.go
+++ b/pkg/morph/client/container/load.go
@@ -48,14 +48,14 @@ func (p *PutSizeArgs) SetReporterKey(v []byte) {
 func (c *Client) PutSize(args PutSizeArgs) error {
 	prm := client.InvokePrm{}
 
-	prm.SetMethod(c.putSizeMethod)
+	prm.SetMethod(putSizeMethod)
 	prm.SetArgs(args.epoch, args.cid, args.size, args.reporterKey)
 	prm.InvokePrmOptional = args.InvokePrmOptional
 
 	err := c.client.Invoke(prm)
 
 	if err != nil {
-		return fmt.Errorf("could not invoke method (%s): %w", c.putSizeMethod, err)
+		return fmt.Errorf("could not invoke method (%s): %w", putSizeMethod, err)
 	}
 	return nil
 }
@@ -89,19 +89,19 @@ func (v *ListSizesValues) IDList() [][]byte {
 func (c *Client) ListSizes(args ListSizesArgs) (*ListSizesValues, error) {
 	invokePrm := client.TestInvokePrm{}
 
-	invokePrm.SetMethod(c.listSizesMethod)
+	invokePrm.SetMethod(listSizesMethod)
 	invokePrm.SetArgs(args.epoch)
 
 	prms, err := c.client.TestInvoke(invokePrm)
 	if err != nil {
-		return nil, fmt.Errorf("could not perform test invocation (%s): %w", c.listSizesMethod, err)
+		return nil, fmt.Errorf("could not perform test invocation (%s): %w", listSizesMethod, err)
 	} else if ln := len(prms); ln != 1 {
-		return nil, fmt.Errorf("unexpected stack item count (%s): %d", c.listSizesMethod, ln)
+		return nil, fmt.Errorf("unexpected stack item count (%s): %d", listSizesMethod, ln)
 	}
 
 	prms, err = client.ArrayFromStackItem(prms[0])
 	if err != nil {
-		return nil, fmt.Errorf("could not get stack item array from stack item (%s): %w", c.listSizesMethod, err)
+		return nil, fmt.Errorf("could not get stack item array from stack item (%s): %w", listSizesMethod, err)
 	}
 
 	res := &ListSizesValues{
@@ -111,7 +111,7 @@ func (c *Client) ListSizes(args ListSizesArgs) (*ListSizesValues, error) {
 	for i := range prms {
 		id, err := client.BytesFromStackItem(prms[i])
 		if err != nil {
-			return nil, fmt.Errorf("could not get ID byte array from stack item (%s): %w", c.listSizesMethod, err)
+			return nil, fmt.Errorf("could not get ID byte array from stack item (%s): %w", listSizesMethod, err)
 		}
 
 		res.ids = append(res.ids, id)
@@ -159,33 +159,33 @@ func (v *GetSizeValues) Estimations() Estimations {
 func (c *Client) GetContainerSize(args GetSizeArgs) (*GetSizeValues, error) {
 	invokePrm := client.TestInvokePrm{}
 
-	invokePrm.SetMethod(c.getSizeMethod)
+	invokePrm.SetMethod(getSizeMethod)
 	invokePrm.SetArgs(args.id)
 
 	prms, err := c.client.TestInvoke(invokePrm)
 	if err != nil {
-		return nil, fmt.Errorf("could not perform test invocation (%s): %w", c.getSizeMethod, err)
+		return nil, fmt.Errorf("could not perform test invocation (%s): %w", getSizeMethod, err)
 	} else if ln := len(prms); ln != 1 {
-		return nil, fmt.Errorf("unexpected stack item count (%s): %d", c.getSizeMethod, ln)
+		return nil, fmt.Errorf("unexpected stack item count (%s): %d", getSizeMethod, ln)
 	}
 
 	prms, err = client.ArrayFromStackItem(prms[0])
 	if err != nil {
-		return nil, fmt.Errorf("could not get stack items of estimation fields from stack item (%s): %w", c.getSizeMethod, err)
+		return nil, fmt.Errorf("could not get stack items of estimation fields from stack item (%s): %w", getSizeMethod, err)
 	} else if ln := len(prms); ln != 2 {
-		return nil, fmt.Errorf("unexpected stack item count of estimations fields (%s)", c.getSizeMethod)
+		return nil, fmt.Errorf("unexpected stack item count of estimations fields (%s)", getSizeMethod)
 	}
 
 	es := Estimations{}
 
 	es.ContainerID, err = client.BytesFromStackItem(prms[0])
 	if err != nil {
-		return nil, fmt.Errorf("could not get container ID byte array from stack item (%s): %w", c.getSizeMethod, err)
+		return nil, fmt.Errorf("could not get container ID byte array from stack item (%s): %w", getSizeMethod, err)
 	}
 
 	prms, err = client.ArrayFromStackItem(prms[1])
 	if err != nil {
-		return nil, fmt.Errorf("could not get estimation list array from stack item (%s): %w", c.getSizeMethod, err)
+		return nil, fmt.Errorf("could not get estimation list array from stack item (%s): %w", getSizeMethod, err)
 	}
 
 	es.Estimations = make([]Estimation, 0, len(prms))
@@ -193,21 +193,21 @@ func (c *Client) GetContainerSize(args GetSizeArgs) (*GetSizeValues, error) {
 	for i := range prms {
 		arr, err := client.ArrayFromStackItem(prms[i])
 		if err != nil {
-			return nil, fmt.Errorf("could not get estimation struct from stack item (%s): %w", c.getSizeMethod, err)
+			return nil, fmt.Errorf("could not get estimation struct from stack item (%s): %w", getSizeMethod, err)
 		} else if ln := len(arr); ln != 2 {
-			return nil, fmt.Errorf("unexpected stack item count of estimation fields (%s)", c.getSizeMethod)
+			return nil, fmt.Errorf("unexpected stack item count of estimation fields (%s)", getSizeMethod)
 		}
 
 		e := Estimation{}
 
 		e.Reporter, err = client.BytesFromStackItem(arr[0])
 		if err != nil {
-			return nil, fmt.Errorf("could not get reporter byte array from stack item (%s): %w", c.getSizeMethod, err)
+			return nil, fmt.Errorf("could not get reporter byte array from stack item (%s): %w", getSizeMethod, err)
 		}
 
 		e.Size, err = client.IntFromStackItem(arr[1])
 		if err != nil {
-			return nil, fmt.Errorf("could not get estimation size from stack item (%s): %w", c.getSizeMethod, err)
+			return nil, fmt.Errorf("could not get estimation size from stack item (%s): %w", getSizeMethod, err)
 		}
 
 		es.Estimations = append(es.Estimations, e)
diff --git a/pkg/morph/client/container/put.go b/pkg/morph/client/container/put.go
index 9f4f0fae..7b95ac41 100644
--- a/pkg/morph/client/container/put.go
+++ b/pkg/morph/client/container/put.go
@@ -61,11 +61,11 @@ func (c *Client) Put(args PutArgs) error {
 	)
 
 	if args.name != "" {
-		method = c.putNamedMethod
+		method = PutNamedMethod
 
 		prm.SetArgs(args.cnr, args.sig, args.publicKey, args.token, args.name, args.zone)
 	} else {
-		method = c.putMethod
+		method = putMethod
 
 		prm.SetArgs(args.cnr, args.sig, args.publicKey, args.token)
 	}
diff --git a/pkg/morph/client/container/wrapper/wrapper.go b/pkg/morph/client/container/wrapper/wrapper.go
index 11c844a6..37a241bd 100644
--- a/pkg/morph/client/container/wrapper/wrapper.go
+++ b/pkg/morph/client/container/wrapper/wrapper.go
@@ -82,19 +82,10 @@ func NewFromMorph(cli *client.Client, contract util.Uint160, fee fixedn.Fixed8,
 		opts[i](o)
 	}
 
-	// below is working but not the best solution to customize fee for PutNamed operation
-	// It is done like that because container package doesn't provide option to specify the fee.
-	// In the future, we will possibly get rid of the container package at all.
-	const methodNamePutNamed = "putNamed"
-
-	var (
-		staticOpts = o.staticOpts
-		cnrOpts    = make([]container.Option, 0, 1)
-	)
+	staticOpts := o.staticOpts
 
 	if o.feePutNamedSet {
-		staticOpts = append(staticOpts, client.WithCustomFee(methodNamePutNamed, o.feePutNamed))
-		cnrOpts = append(cnrOpts, container.WithPutNamedMethod(methodNamePutNamed))
+		staticOpts = append(staticOpts, client.WithCustomFee(container.PutNamedMethod, o.feePutNamed))
 	}
 
 	staticClient, err := client.NewStatic(cli, contract, fee, staticOpts...)
@@ -102,7 +93,7 @@ func NewFromMorph(cli *client.Client, contract util.Uint160, fee fixedn.Fixed8,
 		return nil, fmt.Errorf("can't create container static client: %w", err)
 	}
 
-	enhancedContainerClient, err := container.New(staticClient, cnrOpts...)
+	enhancedContainerClient, err := container.New(staticClient)
 	if err != nil {
 		return nil, fmt.Errorf("can't create container morph client: %w", err)
 	}
diff --git a/pkg/morph/client/neofs/bind.go b/pkg/morph/client/neofs/bind.go
index 4879a732..a74b878d 100644
--- a/pkg/morph/client/neofs/bind.go
+++ b/pkg/morph/client/neofs/bind.go
@@ -46,13 +46,13 @@ func (x *commonBindArgs) SetKeys(v [][]byte) {
 func (x *Client) BindKeys(args BindKeysArgs) error {
 	prm := client.InvokePrm{}
 
-	prm.SetMethod(x.bindKeysMethod)
+	prm.SetMethod(bindKeysMethod)
 	prm.SetArgs(args.scriptHash, args.keys)
 	prm.InvokePrmOptional = args.InvokePrmOptional
 
 	err := x.client.Invoke(prm)
 	if err != nil {
-		return fmt.Errorf("could not invoke method (%s): %w", x.bindKeysMethod, err)
+		return fmt.Errorf("could not invoke method (%s): %w", bindKeysMethod, err)
 	}
 
 	return nil
@@ -63,13 +63,13 @@ func (x *Client) BindKeys(args BindKeysArgs) error {
 func (x *Client) UnbindKeys(args UnbindKeysArgs) error {
 	prm := client.InvokePrm{}
 
-	prm.SetMethod(x.unbindKeysMethod)
+	prm.SetMethod(unbindKeysMethod)
 	prm.SetArgs(args.scriptHash, args.keys)
 	prm.InvokePrmOptional = args.InvokePrmOptional
 
 	err := x.client.Invoke(prm)
 	if err != nil {
-		return fmt.Errorf("could not invoke method (%s): %w", x.unbindKeysMethod, err)
+		return fmt.Errorf("could not invoke method (%s): %w", unbindKeysMethod, err)
 	}
 
 	return nil
diff --git a/pkg/morph/client/neofs/cheque.go b/pkg/morph/client/neofs/cheque.go
index 1c2f3445..ed8d3def 100644
--- a/pkg/morph/client/neofs/cheque.go
+++ b/pkg/morph/client/neofs/cheque.go
@@ -40,7 +40,7 @@ func (c *ChequePrm) SetLock(lock util.Uint160) {
 func (x *Client) Cheque(args ChequePrm) error {
 	prm := client.InvokePrm{}
 
-	prm.SetMethod(x.chequeMethod)
+	prm.SetMethod(chequeMethod)
 	prm.SetArgs(args.id, args.user.BytesBE(), args.amount, args.lock.BytesBE())
 	prm.InvokePrmOptional = args.InvokePrmOptional
 
@@ -70,7 +70,7 @@ func (a *AlphabetUpdatePrm) SetPubs(pubs keys.PublicKeys) {
 func (x *Client) AlphabetUpdate(args AlphabetUpdatePrm) error {
 	prm := client.InvokePrm{}
 
-	prm.SetMethod(x.alphabetUpdateMethod)
+	prm.SetMethod(alphabetUpdateMethod)
 	prm.SetArgs(args.id, args.pubs)
 	prm.InvokePrmOptional = args.InvokePrmOptional
 
diff --git a/pkg/morph/client/neofs/client.go b/pkg/morph/client/neofs/client.go
index 2fef77c2..3ff274fe 100644
--- a/pkg/morph/client/neofs/client.go
+++ b/pkg/morph/client/neofs/client.go
@@ -14,85 +14,22 @@ import (
 // and can lead to panic.
 type Client struct {
 	client *client.StaticClient // static NeoFS contract client
-
-	*cfg // contract method names
 }
 
-// Option is a client configuration change function.
-type Option func(*cfg)
-
-type cfg struct {
-	alphabetUpdateMethod,
-	chequeMethod,
-	bindKeysMethod,
-	unbindKeysMethod string
-}
-
-func defaultConfig() *cfg {
-	const (
-		defaultBindKeysMethod       = "bind"
-		defaultUnbindKeysMethod     = "unbind"
-		defaultAlphabetUpdateMethod = "alphabetUpdate"
-		defaultChequeMethod         = "cheque"
-	)
-
-	return &cfg{
-		alphabetUpdateMethod: defaultAlphabetUpdateMethod,
-		chequeMethod:         defaultChequeMethod,
-		bindKeysMethod:       defaultBindKeysMethod,
-		unbindKeysMethod:     defaultUnbindKeysMethod,
-	}
-}
+const (
+	bindKeysMethod       = "bind"
+	unbindKeysMethod     = "unbind"
+	alphabetUpdateMethod = "alphabetUpdate"
+	chequeMethod         = "cheque"
+)
 
 // New creates, initializes and returns the Client instance.
 //
 // If StaticClient is nil, panic occurs.
-//
-// Other values are set according to provided options, or by default:
-//  * key binding method name: bind;
-//  * key unbinding method name: unbind;
-//
-// If desired option satisfies the default value, it can be omitted.
-// If multiple options of the same config value are supplied,
-// the option with the highest index in the arguments will be used.
-func New(c *client.StaticClient, opts ...Option) *Client {
+func New(c *client.StaticClient) *Client {
 	if c == nil {
 		panic("static client is nil")
 	}
 
-	res := &Client{
-		client: c,
-		cfg:    defaultConfig(), // build default configuration
-	}
-
-	// apply options
-	for _, opt := range opts {
-		opt(res.cfg)
-	}
-
-	return res
-}
-
-// WithBindKeysMethod returns a client constructor option that
-// specifies the method name of key binding operation.
-//
-// Ignores empty value.
-func WithBindKeysMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.bindKeysMethod = n
-		}
-	}
-}
-
-// WithUnbindKeysMethod returns a client constructor option that
-// specifies the method name of key unbinding operation.
-//
-// Ignores empty value.
-func WithUnbindKeysMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.unbindKeysMethod = n
-		}
-	}
+	return &Client{client: c}
 }
diff --git a/pkg/morph/client/neofsid/addrm_keys.go b/pkg/morph/client/neofsid/addrm_keys.go
index 99016c74..4e99d5a4 100644
--- a/pkg/morph/client/neofsid/addrm_keys.go
+++ b/pkg/morph/client/neofsid/addrm_keys.go
@@ -45,13 +45,13 @@ func (x *commonBindArgs) SetKeys(v [][]byte) {
 func (x *Client) AddKeys(args AddKeysArgs) error {
 	prm := client.InvokePrm{}
 
-	prm.SetMethod(x.addKeysMethod)
+	prm.SetMethod(addKeysMethod)
 	prm.SetArgs(args.ownerID, args.keys)
 	prm.InvokePrmOptional = args.InvokePrmOptional
 
 	err := x.client.Invoke(prm)
 	if err != nil {
-		return fmt.Errorf("could not invoke method (%s): %w", x.addKeysMethod, err)
+		return fmt.Errorf("could not invoke method (%s): %w", addKeysMethod, err)
 	}
 
 	return nil
@@ -62,13 +62,13 @@ func (x *Client) AddKeys(args AddKeysArgs) error {
 func (x *Client) RemoveKeys(args RemoveKeysArgs) error {
 	prm := client.InvokePrm{}
 
-	prm.SetMethod(x.removeKeysMethod)
+	prm.SetMethod(removeKeysMethod)
 	prm.SetArgs(args.ownerID, args.keys)
 	prm.InvokePrmOptional = args.InvokePrmOptional
 
 	err := x.client.Invoke(prm)
 	if err != nil {
-		return fmt.Errorf("could not invoke method (%s): %w", x.removeKeysMethod, err)
+		return fmt.Errorf("could not invoke method (%s): %w", removeKeysMethod, err)
 	}
 
 	return nil
diff --git a/pkg/morph/client/neofsid/client.go b/pkg/morph/client/neofsid/client.go
index 2e6c9752..645961d8 100644
--- a/pkg/morph/client/neofsid/client.go
+++ b/pkg/morph/client/neofsid/client.go
@@ -14,99 +14,21 @@ import (
 // and can lead to panic.
 type Client struct {
 	client *client.StaticClient // static NeoFS ID contract client
-
-	*cfg // contract method names
-}
-
-// Option is a client configuration change function.
-type Option func(*cfg)
-
-type cfg struct {
-	addKeysMethod,
-	removeKeysMethod,
-	keyListingMethod string
 }
 
 const (
-	defaultKeyListingMethod = "key" // default key listing method name
-	defaultAddKeysMethod    = "addKey"
-	defaultRemoveKeysMethod = "removeKey"
+	keyListingMethod = "key"
+	addKeysMethod    = "addKey"
+	removeKeysMethod = "removeKey"
 )
 
-func defaultConfig() *cfg {
-	return &cfg{
-		addKeysMethod:    defaultAddKeysMethod,
-		removeKeysMethod: defaultRemoveKeysMethod,
-		keyListingMethod: defaultKeyListingMethod,
-	}
-}
-
 // New creates, initializes and returns the Client instance.
 //
 // If StaticClient is nil, panic occurs.
-//
-// Other values are set according to provided options, or by default:
-//  * key listing method name: key.
-//
-// If desired option satisfies the default value, it can be omitted.
-// If multiple options of the same config value are supplied,
-// the option with the highest index in the arguments will be used.
-func New(c *client.StaticClient, opts ...Option) *Client {
+func New(c *client.StaticClient) *Client {
 	if c == nil {
 		panic("static client is nil")
 	}
 
-	res := &Client{
-		client: c,
-		cfg:    defaultConfig(), // build default configuration
-	}
-
-	// apply options
-	for _, opt := range opts {
-		opt(res.cfg)
-	}
-
-	return res
-}
-
-// WithKeyListingMethod returns a client constructor option that
-// specifies the method name of key listing operation.
-//
-// Ignores empty value.
-//
-// If option not provided, "key" is used.
-func WithKeyListingMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.keyListingMethod = n
-		}
-	}
-}
-
-// WithAddKeysMethod returns a client constructor option that
-// specifies the method name of adding key operation.
-//
-// Ignores empty value.
-//
-// If option not provided, "addKey" is used.
-func WithAddKeysMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.addKeysMethod = n
-		}
-	}
-}
-
-// WithRemoveKeysMethod returns a client constructor option that
-// specifies the method name of removing key operation.
-//
-// Ignores empty value.
-//
-// If option not provided, "removeKey" is used.
-func WithRemoveKeysMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.removeKeysMethod = n
-		}
-	}
+	return &Client{client: c}
 }
diff --git a/pkg/morph/client/neofsid/keys.go b/pkg/morph/client/neofsid/keys.go
index da15271c..415c3fef 100644
--- a/pkg/morph/client/neofsid/keys.go
+++ b/pkg/morph/client/neofsid/keys.go
@@ -35,19 +35,19 @@ func (l *KeyListingValues) Keys() [][]byte {
 func (x *Client) AccountKeys(args KeyListingArgs) (*KeyListingValues, error) {
 	invokePrm := client.TestInvokePrm{}
 
-	invokePrm.SetMethod(x.keyListingMethod)
+	invokePrm.SetMethod(keyListingMethod)
 	invokePrm.SetArgs(args.ownerID)
 
 	items, err := x.client.TestInvoke(invokePrm)
 	if err != nil {
-		return nil, fmt.Errorf("could not perform test invocation (%s): %w", x.keyListingMethod, err)
+		return nil, fmt.Errorf("could not perform test invocation (%s): %w", keyListingMethod, err)
 	} else if ln := len(items); ln != 1 {
-		return nil, fmt.Errorf("unexpected stack item count (%s): %d", x.keyListingMethod, ln)
+		return nil, fmt.Errorf("unexpected stack item count (%s): %d", keyListingMethod, ln)
 	}
 
 	items, err = client.ArrayFromStackItem(items[0])
 	if err != nil {
-		return nil, fmt.Errorf("1st stack item must be an array (%s)", x.keyListingMethod)
+		return nil, fmt.Errorf("1st stack item must be an array (%s)", keyListingMethod)
 	}
 
 	keys := make([][]byte, 0, len(items))
@@ -55,7 +55,7 @@ func (x *Client) AccountKeys(args KeyListingArgs) (*KeyListingValues, error) {
 	for i := range items {
 		key, err := client.BytesFromStackItem(items[i])
 		if err != nil {
-			return nil, fmt.Errorf("invalid stack item, expected byte array (%s)", x.keyListingMethod)
+			return nil, fmt.Errorf("invalid stack item, expected byte array (%s)", keyListingMethod)
 		}
 
 		keys = append(keys, key)
diff --git a/pkg/morph/client/netmap/add_peer.go b/pkg/morph/client/netmap/add_peer.go
index 90c0ae8b..f501a7c6 100644
--- a/pkg/morph/client/netmap/add_peer.go
+++ b/pkg/morph/client/netmap/add_peer.go
@@ -24,12 +24,12 @@ func (a *AddPeerArgs) SetInfo(v []byte) {
 func (c *Client) AddPeer(args AddPeerArgs) error {
 	prm := client.InvokePrm{}
 
-	prm.SetMethod(c.addPeerMethod)
+	prm.SetMethod(addPeerMethod)
 	prm.SetArgs(args.info)
 	prm.InvokePrmOptional = args.InvokePrmOptional
 
 	if err := c.client.Invoke(prm); err != nil {
-		return fmt.Errorf("could not invoke method (%s): %w", c.addPeerMethod, err)
+		return fmt.Errorf("could not invoke method (%s): %w", addPeerMethod, err)
 	}
 	return nil
 }
diff --git a/pkg/morph/client/netmap/client.go b/pkg/morph/client/netmap/client.go
index 91907ac5..e525acd9 100644
--- a/pkg/morph/client/netmap/client.go
+++ b/pkg/morph/client/netmap/client.go
@@ -1,8 +1,6 @@
 package netmap
 
 import (
-	"errors"
-
 	"github.com/nspcc-dev/neofs-node/pkg/morph/client"
 	"github.com/nspcc-dev/neofs-sdk-go/netmap"
 )
@@ -19,216 +17,39 @@ type NodeInfo = netmap.NodeInfo
 // and can lead to panic.
 type Client struct {
 	client *client.StaticClient // static Netmap contract client
-
-	*cfg // contract method names
-}
-
-// ErrNilClient is returned by functions that expect
-// a non-nil Client pointer, but received nil.
-var ErrNilClient = errors.New("netmap contract client is nil")
-
-// Option is a client configuration change function.
-type Option func(*cfg)
-
-type cfg struct {
-	addPeerMethod, // add peer method name for invocation
-	newEpochMethod, // new epoch method name for invocation
-	innerRingList, // get innerring list method name for invocation
-	netMapMethod, // get network map method name
-	netMapCandidatesMethod, // get network candidates method name
-	snapshotMethod, // get network map snapshot method name
-	epochSnapshotMethod, // get network map snapshot by epoch method name
-	updateStateMethod, // update state method name for invocation
-	epochMethod, // get epoch number method name
-	lastEpochBlockMethod, // get last epoch number method name
-	updateInnerRing, // update innerring method name
-	setConfigMethod, // set config method name
-	configMethod, // get config value method name
-	configListMethod string // list config method name
 }
 
 const (
-	defaultAddPeerMethod         = "addPeer"          // default add peer method name
-	defaultConfigMethod          = "config"           // default get config value method name
-	defaultEpochMethod           = "epoch"            // default get epoch number method name
-	defaultLastEpochBlockMethod  = "lastEpochBlock"   // default get last epoch block number method name
-	defaultInnerRingListMethod   = "innerRingList"    // default get innerring list method name
-	defaultNetMapCandidateMethod = "netmapCandidates" // default get network candidates method name
-	defaultNetMapMethod          = "netmap"           // default get network map method name
-	defaultNewEpochMethod        = "newEpoch"         // default new epoch method name
-	defaultSetConfigMethod       = "setConfig"        // default get config value method name
-	defaultUpdateInnerRingMethod = "updateInnerRing"  // default update innerring method name
-	defaultSnapshotMethod        = "snapshot"         // default get network map snapshot method name
-	defaultUpdateStateMethod     = "updateState"      // default update state method name
+	addPeerMethod          = "addPeer"
+	configMethod           = "config"
+	epochMethod            = "epoch"
+	lastEpochBlockMethod   = "lastEpochBlock"
+	innerRingListMethod    = "innerRingList"
+	netMapCandidatesMethod = "netmapCandidates"
+	netMapMethod           = "netmap"
+	newEpochMethod         = "newEpoch"
+	setConfigMethod        = "setConfig"
+	updateInnerRingMethod  = "updateInnerRing"
+	snapshotMethod         = "snapshot"
+	updateStateMethod      = "updateState"
 
-	defaultEpochSnapshotMethod = "snapshotByEpoch" // default get network map snapshot by epoch method name
+	epochSnapshotMethod = "snapshotByEpoch"
 
-	defaultConfigListMethod = "listConfig" // default config listing method name
+	configListMethod = "listConfig"
 )
 
-func defaultConfig() *cfg {
-	return &cfg{
-		addPeerMethod:          defaultAddPeerMethod,
-		configMethod:           defaultConfigMethod,
-		epochMethod:            defaultEpochMethod,
-		lastEpochBlockMethod:   defaultLastEpochBlockMethod,
-		innerRingList:          defaultInnerRingListMethod,
-		netMapCandidatesMethod: defaultNetMapCandidateMethod,
-		netMapMethod:           defaultNetMapMethod,
-		newEpochMethod:         defaultNewEpochMethod,
-		setConfigMethod:        defaultSetConfigMethod,
-		snapshotMethod:         defaultSnapshotMethod,
-		updateStateMethod:      defaultUpdateStateMethod,
-		updateInnerRing:        defaultUpdateInnerRingMethod,
-		epochSnapshotMethod:    defaultEpochSnapshotMethod,
-		configListMethod:       defaultConfigListMethod,
-	}
-}
-
 // New creates, initializes and returns the Client instance.
 //
 // If StaticClient is nil, client.ErrNilStaticClient is returned.
-//
-// Other values are set according to provided options, or by default:
-//  * add peer method name: AddPeer;
-//  * new epoch method name: NewEpoch;
-//  * get network map method name: Netmap;
-//  * update state method name: UpdateState;
-//
-// If desired option satisfies the default value, it can be omitted.
-// If multiple options of the same config value are supplied,
-// the option with the highest index in the arguments will be used.
-func New(c *client.StaticClient, opts ...Option) (*Client, error) {
+func New(c *client.StaticClient) (*Client, error) {
 	if c == nil {
 		return nil, client.ErrNilStaticClient
 	}
 
-	res := &Client{
-		client: c,
-		cfg:    defaultConfig(), // build default configuration
-	}
-
-	// apply options
-	for _, opt := range opts {
-		opt(res.cfg)
-	}
-
-	return res, nil
+	return &Client{client: c}, nil
 }
 
 // Morph returns raw morph client.
 func (c Client) Morph() *client.Client {
 	return c.client.Morph()
 }
-
-// WithAddPeerMethod returns a client constructor option that
-// specifies the method name of adding peer operation.
-//
-// Ignores empty value.
-//
-// If option not provided, "AddPeer" is used.
-func WithAddPeerMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.addPeerMethod = n
-		}
-	}
-}
-
-// WithNewEpochMethod returns a client constructor option that
-// specifies the method name of new epoch operation.
-//
-// Ignores empty value.
-//
-// If option not provided, "NewEpoch" is used.
-func WithNewEpochMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.newEpochMethod = n
-		}
-	}
-}
-
-// WithNetMapMethod returns a client constructor option that
-// specifies the method name of network map receiving operation.
-//
-// Ignores empty value.
-//
-// If option not provided, "Netmap" is used.
-func WithNetMapMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.netMapMethod = n
-		}
-	}
-}
-
-// WithUpdateStateMethod returns a client constructor option that
-// specifies the method name of peer state updating operation.
-//
-// Ignores empty value.
-//
-// If option not provided, "UpdateState" is used.
-func WithUpdateStateMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.updateStateMethod = n
-		}
-	}
-}
-
-// WithEpochMethod returns a client constructor option that
-// specifies the method name of epoch number receiving operation.
-//
-// Ignores empty value.
-//
-// If option not provided, "epoch" is used.
-func WithEpochMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.epochMethod = n
-		}
-	}
-}
-
-// WithConfigMethod returns a client constructor option that
-// specifies the method name of config value receiving operation.
-//
-// Ignores empty value.
-//
-// If option not provided, "config" is used.
-func WithConfigMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.configMethod = n
-		}
-	}
-}
-
-// WithEpochSnapshotMethod returns a client constructor option that
-// specifies the method name of snapshot by value receiving operation.
-//
-// Ignores empty value.
-//
-// If option not provided, "snapshotByValue" is used.
-func WithEpochSnapshotMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.epochSnapshotMethod = n
-		}
-	}
-}
-
-// WithConfigListMethod returns a client constructor option that
-// specifies the config listing method name.
-//
-// Ignores empty value.
-//
-// If option not provided, "listConfig" is used.
-func WithConfigListMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.configListMethod = n
-		}
-	}
-}
diff --git a/pkg/morph/client/netmap/config.go b/pkg/morph/client/netmap/config.go
index d17f17d9..4ffc28a1 100644
--- a/pkg/morph/client/netmap/config.go
+++ b/pkg/morph/client/netmap/config.go
@@ -34,18 +34,18 @@ func (c ConfigValues) Value() interface{} {
 func (c *Client) Config(args ConfigArgs, assert func(stackitem.Item) (interface{}, error)) (*ConfigValues, error) {
 	prm := client.TestInvokePrm{}
 
-	prm.SetMethod(c.configMethod)
+	prm.SetMethod(configMethod)
 	prm.SetArgs(args.key)
 
 	items, err := c.client.TestInvoke(prm)
 	if err != nil {
 		return nil, fmt.Errorf("could not perform test invocation (%s): %w",
-			c.configMethod, err)
+			configMethod, err)
 	}
 
 	if ln := len(items); ln != 1 {
 		return nil, fmt.Errorf("unexpected stack item count (%s): %d",
-			c.configMethod, ln)
+			configMethod, ln)
 	}
 
 	val, err := assert(items[0])
@@ -86,7 +86,7 @@ func (s *SetConfigPrm) SetValue(value interface{}) {
 func (c *Client) SetConfig(args SetConfigPrm) error {
 	prm := client.InvokePrm{}
 
-	prm.SetMethod(c.setConfigMethod)
+	prm.SetMethod(setConfigMethod)
 	prm.SetArgs(args.id, args.key, args.value)
 	prm.InvokePrmOptional = args.InvokePrmOptional
 
@@ -148,23 +148,23 @@ func (x ListConfigValues) IterateRecords(f func(key, value []byte) error) error
 func (c *Client) ListConfig(_ ListConfigArgs) (*ListConfigValues, error) {
 	prm := client.TestInvokePrm{}
 
-	prm.SetMethod(c.configListMethod)
+	prm.SetMethod(configListMethod)
 
 	items, err := c.client.TestInvoke(prm)
 	if err != nil {
 		return nil, fmt.Errorf("could not perform test invocation (%s): %w",
-			c.configListMethod, err)
+			configListMethod, err)
 	}
 
 	if ln := len(items); ln != 1 {
 		return nil, fmt.Errorf("unexpected stack item count (%s): %d",
-			c.configListMethod, ln)
+			configListMethod, ln)
 	}
 
 	arr, err := client.ArrayFromStackItem(items[0])
 	if err != nil {
 		return nil, fmt.Errorf("record list (%s): %w",
-			c.configListMethod, err)
+			configListMethod, err)
 	}
 
 	return &ListConfigValues{
diff --git a/pkg/morph/client/netmap/epoch.go b/pkg/morph/client/netmap/epoch.go
index c167dc54..ece5ffec 100644
--- a/pkg/morph/client/netmap/epoch.go
+++ b/pkg/morph/client/netmap/epoch.go
@@ -25,22 +25,22 @@ func (e EpochValues) Number() int64 {
 // method of NeoFS Netmap contract.
 func (c *Client) Epoch(_ EpochArgs) (*EpochValues, error) {
 	prm := client.TestInvokePrm{}
-	prm.SetMethod(c.epochMethod)
+	prm.SetMethod(epochMethod)
 
 	items, err := c.client.TestInvoke(prm)
 	if err != nil {
 		return nil, fmt.Errorf("could not perform test invocation (%s): %w",
-			c.epochMethod, err)
+			epochMethod, err)
 	}
 
 	if ln := len(items); ln != 1 {
 		return nil, fmt.Errorf("unexpected stack item count (%s): %d",
-			c.epochMethod, ln)
+			epochMethod, ln)
 	}
 
 	num, err := client.IntFromStackItem(items[0])
 	if err != nil {
-		return nil, fmt.Errorf("could not get number from stack item (%s): %w", c.epochMethod, err)
+		return nil, fmt.Errorf("could not get number from stack item (%s): %w", epochMethod, err)
 	}
 
 	return &EpochValues{
@@ -67,23 +67,23 @@ func (e EpochBlockValues) Block() int64 {
 // method of NeoFS Netmap contract.
 func (c *Client) LastEpochBlock(_ EpochBlockArgs) (*EpochBlockValues, error) {
 	prm := client.TestInvokePrm{}
-	prm.SetMethod(c.lastEpochBlockMethod)
+	prm.SetMethod(lastEpochBlockMethod)
 
 	items, err := c.client.TestInvoke(prm)
 	if err != nil {
 		return nil, fmt.Errorf("could not perform test invocation (%s): %w",
-			c.lastEpochBlockMethod, err)
+			lastEpochBlockMethod, err)
 	}
 
 	if ln := len(items); ln != 1 {
 		return nil, fmt.Errorf("unexpected stack item count (%s): %d",
-			c.lastEpochBlockMethod, ln)
+			lastEpochBlockMethod, ln)
 	}
 
 	block, err := client.IntFromStackItem(items[0])
 	if err != nil {
 		return nil, fmt.Errorf("could not get number from stack item (%s): %w",
-			c.lastEpochBlockMethod, err)
+			lastEpochBlockMethod, err)
 	}
 
 	return &EpochBlockValues{
diff --git a/pkg/morph/client/netmap/innerring.go b/pkg/morph/client/netmap/innerring.go
index 1d9f4181..cc2b51c0 100644
--- a/pkg/morph/client/netmap/innerring.go
+++ b/pkg/morph/client/netmap/innerring.go
@@ -32,7 +32,7 @@ func (c *Client) UpdateInnerRing(p UpdateIRPrm) error {
 
 	prm := client.InvokePrm{}
 
-	prm.SetMethod(c.updateInnerRing)
+	prm.SetMethod(updateInnerRingMethod)
 	prm.SetArgs(args)
 	prm.InvokePrmOptional = p.InvokePrmOptional
 
@@ -43,14 +43,14 @@ func (c *Client) UpdateInnerRing(p UpdateIRPrm) error {
 // netmap contract.
 func (c *Client) InnerRingList() (keys.PublicKeys, error) {
 	invokePrm := client.TestInvokePrm{}
-	invokePrm.SetMethod(c.innerRingList)
+	invokePrm.SetMethod(innerRingListMethod)
 
 	prms, err := c.client.TestInvoke(invokePrm)
 	if err != nil {
-		return nil, fmt.Errorf("could not perform test invocation (%s): %w", c.innerRingList, err)
+		return nil, fmt.Errorf("could not perform test invocation (%s): %w", innerRingListMethod, err)
 	}
 
-	return irKeysFromStackItem(prms, c.innerRingList)
+	return irKeysFromStackItem(prms, innerRingListMethod)
 }
 
 func irKeysFromStackItem(stack []stackitem.Item, method string) (keys.PublicKeys, error) {
diff --git a/pkg/morph/client/netmap/netmap.go b/pkg/morph/client/netmap/netmap.go
index 4ac95448..0b0b14c6 100644
--- a/pkg/morph/client/netmap/netmap.go
+++ b/pkg/morph/client/netmap/netmap.go
@@ -62,15 +62,15 @@ type GetNetMapArgs struct{}
 // method of NeoFS Netmap contract.
 func (c *Client) NetMap(_ GetNetMapArgs) (*GetNetMapValues, error) {
 	invokePrm := client.TestInvokePrm{}
-	invokePrm.SetMethod(c.netMapMethod)
+	invokePrm.SetMethod(netMapMethod)
 
 	prms, err := c.client.TestInvoke(invokePrm)
 	if err != nil {
 		return nil, fmt.Errorf("could not perform test invocation (%s): %w",
-			c.netMapMethod, err)
+			netMapMethod, err)
 	}
 
-	return peersFromStackItems(prms, c.netMapMethod)
+	return peersFromStackItems(prms, netMapMethod)
 }
 
 // GetSnapshotArgs groups the arguments
@@ -91,16 +91,16 @@ func (g *GetSnapshotArgs) SetDiff(d uint64) {
 func (c *Client) Snapshot(a GetSnapshotArgs) (*GetNetMapValues, error) {
 	invokePrm := client.TestInvokePrm{}
 
-	invokePrm.SetMethod(c.snapshotMethod)
+	invokePrm.SetMethod(snapshotMethod)
 	invokePrm.SetArgs(int64(a.diff))
 
 	prms, err := c.client.TestInvoke(invokePrm)
 	if err != nil {
 		return nil, fmt.Errorf("could not perform test invocation (%s): %w",
-			c.netMapMethod, err)
+			netMapMethod, err)
 	}
 
-	return peersFromStackItems(prms, c.snapshotMethod)
+	return peersFromStackItems(prms, snapshotMethod)
 }
 
 // EpochSnapshotArgs groups the arguments
@@ -125,16 +125,16 @@ type EpochSnapshotValues struct {
 func (c *Client) EpochSnapshot(args EpochSnapshotArgs) (*EpochSnapshotValues, error) {
 	invokePrm := client.TestInvokePrm{}
 
-	invokePrm.SetMethod(c.epochSnapshotMethod)
+	invokePrm.SetMethod(epochSnapshotMethod)
 	invokePrm.SetArgs(int64(args.epoch))
 
 	prms, err := c.client.TestInvoke(invokePrm)
 	if err != nil {
 		return nil, fmt.Errorf("could not perform test invocation (%s): %w",
-			c.epochSnapshotMethod, err)
+			epochSnapshotMethod, err)
 	}
 
-	nmVals, err := peersFromStackItems(prms, c.epochSnapshotMethod)
+	nmVals, err := peersFromStackItems(prms, epochSnapshotMethod)
 	if err != nil {
 		return nil, err
 	}
@@ -160,14 +160,14 @@ func (g GetNetMapCandidatesValues) NetmapNodes() []*PeerWithState {
 
 func (c *Client) Candidates(_ GetNetMapCandidatesArgs) (*GetNetMapCandidatesValues, error) {
 	invokePrm := client.TestInvokePrm{}
-	invokePrm.SetMethod(c.netMapCandidatesMethod)
+	invokePrm.SetMethod(netMapCandidatesMethod)
 
 	prms, err := c.client.TestInvoke(invokePrm)
 	if err != nil {
-		return nil, fmt.Errorf("could not perform test invocation (%s): %w", c.netMapCandidatesMethod, err)
+		return nil, fmt.Errorf("could not perform test invocation (%s): %w", netMapCandidatesMethod, err)
 	}
 
-	candVals, err := peersWithStateFromStackItems(prms, c.netMapCandidatesMethod)
+	candVals, err := peersWithStateFromStackItems(prms, netMapCandidatesMethod)
 	if err != nil {
 		return nil, fmt.Errorf("could not parse contract response: %w", err)
 	}
diff --git a/pkg/morph/client/netmap/new_epoch.go b/pkg/morph/client/netmap/new_epoch.go
index 1e142999..bf5b37b9 100644
--- a/pkg/morph/client/netmap/new_epoch.go
+++ b/pkg/morph/client/netmap/new_epoch.go
@@ -24,12 +24,12 @@ func (a *NewEpochArgs) SetEpochNumber(v int64) {
 func (c *Client) NewEpoch(args NewEpochArgs) error {
 	prm := client.InvokePrm{}
 
-	prm.SetMethod(c.newEpochMethod)
+	prm.SetMethod(newEpochMethod)
 	prm.SetArgs(args.number)
 	prm.InvokePrmOptional = args.InvokePrmOptional
 
 	if err := c.client.Invoke(prm); err != nil {
-		return fmt.Errorf("could not invoke method (%s): %w", c.newEpochMethod, err)
+		return fmt.Errorf("could not invoke method (%s): %w", newEpochMethod, err)
 	}
 	return nil
 }
diff --git a/pkg/morph/client/netmap/update_state.go b/pkg/morph/client/netmap/update_state.go
index da46f3fc..dd677ad9 100644
--- a/pkg/morph/client/netmap/update_state.go
+++ b/pkg/morph/client/netmap/update_state.go
@@ -32,13 +32,13 @@ func (u *UpdateStateArgs) SetState(v int64) {
 func (c *Client) UpdateState(args UpdateStateArgs) error {
 	prm := client.InvokePrm{}
 
-	prm.SetMethod(c.updateStateMethod)
+	prm.SetMethod(updateStateMethod)
 	prm.SetArgs(args.state, args.key)
 	prm.InvokePrmOptional = args.InvokePrmOptional
 
 	err := c.client.Invoke(prm)
 	if err != nil {
-		return fmt.Errorf("could not invoke method (%s): %w", c.updateStateMethod, err)
+		return fmt.Errorf("could not invoke method (%s): %w", updateStateMethod, err)
 	}
 
 	return nil
diff --git a/pkg/morph/client/reputation/client.go b/pkg/morph/client/reputation/client.go
index 395fcc06..f8758a3e 100644
--- a/pkg/morph/client/reputation/client.go
+++ b/pkg/morph/client/reputation/client.go
@@ -14,120 +14,27 @@ import (
 // and can lead to panic.
 type Client struct {
 	client *client.StaticClient // static reputation contract client
-
-	*cfg // contract method names
-}
-
-// Option is a client configuration change function.
-type Option func(*cfg)
-
-type cfg struct {
-	putMethod,
-	getMethod,
-	getByIDMethod,
-	listByEpochMethod string
 }
 
 const (
-	defaultPutMethod         = "put"
-	defaultGetMethod         = "get"
-	defaultGetByIDMethod     = "getByID"
-	defaultListByEpochMethod = "listByEpoch"
+	putMethod         = "put"
+	getMethod         = "get"
+	getByIDMethod     = "getByID"
+	listByEpochMethod = "listByEpoch"
 )
 
-func defaultConfig() *cfg {
-	return &cfg{
-		putMethod:         defaultPutMethod,
-		getMethod:         defaultGetMethod,
-		getByIDMethod:     defaultGetByIDMethod,
-		listByEpochMethod: defaultListByEpochMethod,
-	}
-}
-
 // New creates, initializes and returns the Client instance.
 //
 // If StaticClient is nil, client.ErrNilStaticClient is returned.
-//
-// Other values are set according to provided options, or by default.
-//
-// If desired option satisfies the default value, it can be omitted.
-// If multiple options of the same config value are supplied,
-// the option with the highest index in the arguments will be used.
-func New(c *client.StaticClient, opts ...Option) (*Client, error) {
+func New(c *client.StaticClient) (*Client, error) {
 	if c == nil {
 		return nil, client.ErrNilStaticClient
 	}
 
-	res := &Client{
-		client: c,
-		cfg:    defaultConfig(), // build default configuration
-	}
-
-	// apply options
-	for _, opt := range opts {
-		opt(res.cfg)
-	}
-
-	return res, nil
+	return &Client{client: c}, nil
 }
 
 // Morph returns raw morph client.
 func (c Client) Morph() *client.Client {
 	return c.client.Morph()
 }
-
-// WithPutMethod returns a client constructor option that
-// specifies the method name to put reputation value.
-//
-// Ignores empty value.
-//
-// If option not provided, "put" is used.
-func WithPutMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.putMethod = n
-		}
-	}
-}
-
-// WithGetMethod returns a client constructor option that
-// specifies the method name to get reputation value.
-//
-// Ignores empty value.
-//
-// If option not provided, "get" is used.
-func WithGetMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.getMethod = n
-		}
-	}
-}
-
-// WithGetByIDMethod returns a client constructor option that
-// specifies the method name to get reputation value by it's ID in the contract.
-//
-// Ignores empty value.
-//
-// If option not provided, "getByID" is used.
-func WithGetByIDMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.getByIDMethod = n
-		}
-	}
-}
-
-// WithListByEpochMethod returns a client constructor option that
-// specifies the method name to list reputation value IDs for certain epoch.
-//
-// Ignores empty value.
-//
-// If option not provided, "listByEpoch" is used.
-func WithListByEpochDMethod(n string) Option {
-	return func(c *cfg) {
-		if n != "" {
-			c.listByEpochMethod = n
-		}
-	}
-}
diff --git a/pkg/morph/client/reputation/get.go b/pkg/morph/client/reputation/get.go
index 5e087e01..a83ebdee 100644
--- a/pkg/morph/client/reputation/get.go
+++ b/pkg/morph/client/reputation/get.go
@@ -49,15 +49,15 @@ func (g GetResult) Reputations() [][]byte {
 func (c *Client) Get(args GetArgs) (*GetResult, error) {
 	invokePrm := client.TestInvokePrm{}
 
-	invokePrm.SetMethod(c.getMethod)
+	invokePrm.SetMethod(getMethod)
 	invokePrm.SetArgs(int64(args.epoch), args.peerID)
 
 	prms, err := c.client.TestInvoke(invokePrm)
 	if err != nil {
-		return nil, fmt.Errorf("could not perform test invocation (%s): %w", c.getMethod, err)
+		return nil, fmt.Errorf("could not perform test invocation (%s): %w", getMethod, err)
 	}
 
-	return parseReputations(prms, c.getMethod)
+	return parseReputations(prms, getMethod)
 }
 
 // GetByID invokes the call of "get reputation value by reputation id" method
@@ -65,15 +65,15 @@ func (c *Client) Get(args GetArgs) (*GetResult, error) {
 func (c *Client) GetByID(args GetByIDArgs) (*GetResult, error) {
 	invokePrm := client.TestInvokePrm{}
 
-	invokePrm.SetMethod(c.getByIDMethod)
+	invokePrm.SetMethod(getByIDMethod)
 	invokePrm.SetArgs(args.id)
 
 	prms, err := c.client.TestInvoke(invokePrm)
 	if err != nil {
-		return nil, fmt.Errorf("could not perform test invocation (%s): %w", c.getByIDMethod, err)
+		return nil, fmt.Errorf("could not perform test invocation (%s): %w", getByIDMethod, err)
 	}
 
-	return parseReputations(prms, c.getByIDMethod)
+	return parseReputations(prms, getByIDMethod)
 }
 
 func parseReputations(items []stackitem.Item, method string) (*GetResult, error) {
diff --git a/pkg/morph/client/reputation/list.go b/pkg/morph/client/reputation/list.go
index ec05196c..5c650d03 100644
--- a/pkg/morph/client/reputation/list.go
+++ b/pkg/morph/client/reputation/list.go
@@ -33,19 +33,19 @@ func (l ListByEpochResult) IDs() [][]byte {
 func (c *Client) ListByEpoch(args ListByEpochArgs) (*ListByEpochResult, error) {
 	invokePrm := client.TestInvokePrm{}
 
-	invokePrm.SetMethod(c.listByEpochMethod)
+	invokePrm.SetMethod(listByEpochMethod)
 	invokePrm.SetArgs(int64(args.epoch))
 
 	prms, err := c.client.TestInvoke(invokePrm)
 	if err != nil {
-		return nil, fmt.Errorf("could not perform test invocation (%s): %w", c.listByEpochMethod, err)
+		return nil, fmt.Errorf("could not perform test invocation (%s): %w", listByEpochMethod, err)
 	} else if ln := len(prms); ln != 1 {
-		return nil, fmt.Errorf("unexpected stack item count (%s): %d", c.listByEpochMethod, ln)
+		return nil, fmt.Errorf("unexpected stack item count (%s): %d", listByEpochMethod, ln)
 	}
 
 	items, err := client.ArrayFromStackItem(prms[0])
 	if err != nil {
-		return nil, fmt.Errorf("could not get stack item array from stack item (%s): %w", c.listByEpochMethod, err)
+		return nil, fmt.Errorf("could not get stack item array from stack item (%s): %w", listByEpochMethod, err)
 	}
 
 	res := &ListByEpochResult{
@@ -55,7 +55,7 @@ func (c *Client) ListByEpoch(args ListByEpochArgs) (*ListByEpochResult, error) {
 	for i := range items {
 		rawReputation, err := client.BytesFromStackItem(items[i])
 		if err != nil {
-			return nil, fmt.Errorf("could not get byte array from stack item (%s): %w", c.listByEpochMethod, err)
+			return nil, fmt.Errorf("could not get byte array from stack item (%s): %w", listByEpochMethod, err)
 		}
 
 		res.ids = append(res.ids, rawReputation)
diff --git a/pkg/morph/client/reputation/put.go b/pkg/morph/client/reputation/put.go
index 33ab4250..0e1e4e14 100644
--- a/pkg/morph/client/reputation/put.go
+++ b/pkg/morph/client/reputation/put.go
@@ -32,13 +32,13 @@ func (p *PutArgs) SetValue(v []byte) {
 func (c *Client) Put(args PutArgs) error {
 	prm := client.InvokePrm{}
 
-	prm.SetMethod(c.putMethod)
+	prm.SetMethod(putMethod)
 	prm.SetArgs(int64(args.epoch), args.peerID, args.value)
 
 	err := c.client.Invoke(prm)
 
 	if err != nil {
-		return fmt.Errorf("could not invoke method (%s): %w", c.putMethod, err)
+		return fmt.Errorf("could not invoke method (%s): %w", putMethod, err)
 	}
 	return nil
 }
diff --git a/pkg/morph/client/subnet/admin.go b/pkg/morph/client/subnet/admin.go
index f2f9b9c6..a0376b82 100644
--- a/pkg/morph/client/subnet/admin.go
+++ b/pkg/morph/client/subnet/admin.go
@@ -59,17 +59,17 @@ func (x Client) ManageAdmins(prm ManageAdminsPrm) (*ManageAdminsPrm, error) {
 		args = append(args, prm.group, prm.admin)
 
 		if prm.rm {
-			method = "removeClientAdmin"
+			method = removeClientAdminMethod
 		} else {
-			method = "addClientAdmin"
+			method = addClientAdminMethod
 		}
 	} else {
 		args = append(args, prm.admin)
 
 		if prm.rm {
-			method = "removeNodeAdmin"
+			method = removeNodeAdminMethod
 		} else {
-			method = "addNodeAdmin"
+			method = addNodeAdminMethod
 		}
 	}
 
diff --git a/pkg/morph/client/subnet/client.go b/pkg/morph/client/subnet/client.go
index 85310092..6a7a795a 100644
--- a/pkg/morph/client/subnet/client.go
+++ b/pkg/morph/client/subnet/client.go
@@ -24,6 +24,25 @@ type InitPrm struct {
 	mode    Mode
 }
 
+const (
+	deleteMethod = "delete"
+	getMethod    = "get"
+	putMethod    = "put"
+
+	removeClientAdminMethod = "removeClientAdmin"
+	addClientAdminMethod    = "addClientAdmin"
+
+	userAllowedMethod = "userAllowed"
+	removeUserMethod  = "removeUser"
+	addUserMethod     = "addUser"
+
+	removeNodeAdminMethod = "removeNodeAdmin"
+	addNodeAdminMethod    = "addNodeAdmin"
+	nodeAllowedMethod     = "nodeAllowed"
+	removeNodeMethod      = "removeNode"
+	addNodeMethod         = "addNode"
+)
+
 // SetBaseClient sets basic morph client.
 func (x *InitPrm) SetBaseClient(base *client.Client) {
 	x.base = base
diff --git a/pkg/morph/client/subnet/clients.go b/pkg/morph/client/subnet/clients.go
index 335bb521..ce6b840e 100644
--- a/pkg/morph/client/subnet/clients.go
+++ b/pkg/morph/client/subnet/clients.go
@@ -35,7 +35,7 @@ func (x UserAllowedRes) Allowed() bool {
 func (x *Client) UserAllowed(prm UserAllowedPrm) (*UserAllowedRes, error) {
 	args := client.TestInvokePrm{}
 
-	args.SetMethod("userAllowed")
+	args.SetMethod(userAllowedMethod)
 	args.SetArgs(prm.args[:]...)
 
 	res, err := x.client.TestInvoke(args)
@@ -95,9 +95,9 @@ func (x Client) ManageClients(prm ManageClientsPrm) (*ManageClientsRes, error) {
 	var method string
 
 	if prm.rm {
-		method = "removeUser"
+		method = removeUserMethod
 	} else {
-		method = "addUser"
+		method = addUserMethod
 	}
 
 	var prmInvoke client.InvokePrm
diff --git a/pkg/morph/client/subnet/delete.go b/pkg/morph/client/subnet/delete.go
index e52ed882..d74b1d99 100644
--- a/pkg/morph/client/subnet/delete.go
+++ b/pkg/morph/client/subnet/delete.go
@@ -28,7 +28,7 @@ type DeleteRes struct{}
 
 // Delete removes subnet though the call of the corresponding method of the Subnet contract.
 func (x Client) Delete(prm DeletePrm) (*DeleteRes, error) {
-	prm.cliPrm.SetMethod("delete")
+	prm.cliPrm.SetMethod(deleteMethod)
 	prm.cliPrm.SetArgs(prm.args[:]...)
 
 	err := x.client.Invoke(prm.cliPrm)
diff --git a/pkg/morph/client/subnet/get.go b/pkg/morph/client/subnet/get.go
index 88ab2e7b..103afc12 100644
--- a/pkg/morph/client/subnet/get.go
+++ b/pkg/morph/client/subnet/get.go
@@ -32,7 +32,7 @@ var errEmptyResponse = errors.New("empty response")
 func (x *Client) Get(prm GetPrm) (*GetRes, error) {
 	var prmGet client.TestInvokePrm
 
-	prmGet.SetMethod("get")
+	prmGet.SetMethod(getMethod)
 	prmGet.SetArgs(prm.args[:]...)
 
 	res, err := x.client.TestInvoke(prmGet)
diff --git a/pkg/morph/client/subnet/node.go b/pkg/morph/client/subnet/node.go
index c09e4ca8..e3ae4795 100644
--- a/pkg/morph/client/subnet/node.go
+++ b/pkg/morph/client/subnet/node.go
@@ -35,7 +35,7 @@ func (x NodeAllowedRes) Allowed() bool {
 
 // NodeAllowed checks if the node is included in the subnetwork.
 func (x *Client) NodeAllowed(prm NodeAllowedPrm) (*NodeAllowedRes, error) {
-	prm.cliPrm.SetMethod("nodeAllowed")
+	prm.cliPrm.SetMethod(nodeAllowedMethod)
 	prm.cliPrm.SetArgs(prm.args[:]...)
 
 	res, err := x.client.TestInvoke(prm.cliPrm)
diff --git a/pkg/morph/client/subnet/nodes.go b/pkg/morph/client/subnet/nodes.go
index 8dfbdd26..87841e25 100644
--- a/pkg/morph/client/subnet/nodes.go
+++ b/pkg/morph/client/subnet/nodes.go
@@ -35,9 +35,9 @@ func (x Client) ManageNodes(prm ManageNodesPrm) (*ManageNodesRes, error) {
 	var method string
 
 	if prm.rm {
-		method = "removeNode"
+		method = removeNodeMethod
 	} else {
-		method = "addNode"
+		method = addNodeMethod
 	}
 
 	var prmInvoke client.InvokePrm
diff --git a/pkg/morph/client/subnet/put.go b/pkg/morph/client/subnet/put.go
index fc3dcfa0..8a9df681 100644
--- a/pkg/morph/client/subnet/put.go
+++ b/pkg/morph/client/subnet/put.go
@@ -38,7 +38,7 @@ type PutRes struct{}
 
 // Put creates subnet though the call of the corresponding method of the Subnet contract.
 func (x Client) Put(prm PutPrm) (*PutRes, error) {
-	prm.cliPrm.SetMethod("put")
+	prm.cliPrm.SetMethod(putMethod)
 	prm.cliPrm.SetArgs(prm.args[:]...)
 
 	err := x.client.Invoke(prm.cliPrm)