diff --git a/protocol/src/main/resources/ecmascript/buffer/ByteBuffer.mjs b/protocol/src/main/resources/ecmascript/buffer/ByteBuffer.mjs
index 779879b0..690d0cda 100644
--- a/protocol/src/main/resources/ecmascript/buffer/ByteBuffer.mjs
+++ b/protocol/src/main/resources/ecmascript/buffer/ByteBuffer.mjs
@@ -64,6 +64,7 @@ class ByteBuffer {
             this.writeInt(length);
             this.setWriteOffset(currentWriteIndex);
         } else {
+            // ArrayBuffer slice is deep clone
             const retainedByteBuf = this.buffer.slice(currentWriteIndex - length, currentWriteIndex);
             this.setWriteOffset(beforeWriteIndex);
             this.writeInt(length);
diff --git a/protocol/src/main/resources/javascript/buffer/ByteBuffer.js b/protocol/src/main/resources/javascript/buffer/ByteBuffer.js
index 82b8079e..41622b12 100644
--- a/protocol/src/main/resources/javascript/buffer/ByteBuffer.js
+++ b/protocol/src/main/resources/javascript/buffer/ByteBuffer.js
@@ -64,6 +64,7 @@ const ByteBuffer = function() {
             this.writeInt(length);
             this.setWriteOffset(currentWriteIndex);
         } else {
+            // ArrayBuffer slice is deep clone
             const retainedByteBuf = this.buffer.slice(currentWriteIndex - length, currentWriteIndex);
             this.setWriteOffset(beforeWriteIndex);
             this.writeInt(length);
diff --git a/protocol/src/main/resources/typescript/buffer/ByteBuffer.ts b/protocol/src/main/resources/typescript/buffer/ByteBuffer.ts
index 5bcd181f..6a2e8cb3 100644
--- a/protocol/src/main/resources/typescript/buffer/ByteBuffer.ts
+++ b/protocol/src/main/resources/typescript/buffer/ByteBuffer.ts
@@ -73,6 +73,7 @@ class ByteBuffer implements IByteBuffer{
             this.writeInt(length);
             this.setWriteOffset(currentWriteIndex);
         } else {
+            // ArrayBuffer slice is deep clone
             const retainedByteBuf = this.buffer.slice(currentWriteIndex - length, currentWriteIndex);
             this.setWriteOffset(beforeWriteIndex);
             this.writeInt(length);