public Builder setWsOpCodeBytes(
          com.google.protobuf.ByteString value) {
        if (value == null) {
    throw new NullPointerException();
  }
  checkByteStringIsUtf8(value);
        
        wsOpCode_ = value;
        onChanged();
        return this;
      }
<code>optional .org.anychat.protobuf.ws.ChatMessageData message = 2;</code>
AnyChatServer/src/main/java/org/anychat/protobuf/ws/LoginChatProto.java