[#1] add client environment

add client cut
code cleanup
Signed-off-by: Ori Bruk <o.bruk@yadro.com>

models/src/main/java/info/FrostFS/sdk/dto/SplitId.java

@@ -0,0 +1,44 @@
+package info.FrostFS.sdk.dto;
+
+import java.util.UUID;
+
+import static info.FrostFS.sdk.UUIDExtension.asBytes;
+import static info.FrostFS.sdk.UUIDExtension.asUuid;
+import static java.util.Objects.isNull;
+
+public class SplitId {
+    private final UUID id;
+
+    public SplitId(UUID uuid) {
+        this.id = uuid;
+    }
+
+    public SplitId() {
+        this.id = UUID.randomUUID();
+    }
+
+    private SplitId(byte[] binary) {
+        this.id = asUuid(binary);
+    }
+
+    private SplitId(String str) {
+        this.id = UUID.fromString(str);
+    }
+
+    public static SplitId createFromBinary(byte[] binaryData) {
+        return new SplitId(binaryData);
+    }
+
+    public static SplitId createFromString(String stringData) {
+        return new SplitId(stringData);
+    }
+
+    @Override
+    public String toString() {
+        return id.toString();
+    }
+
+    public byte[] toBinary() {
+        return isNull(id) ? null : asBytes(id);
+    }
+}