public com.google.protobuf.ByteString
          getWsOpCodeBytes() {
        java.lang.Object ref = wsOpCode_;
        if (ref instanceof String) {
          com.google.protobuf.ByteString b = 
              com.google.protobuf.ByteString.copyFromUtf8(
                  (java.lang.String) ref);
          wsOpCode_ = b;
          return b;
        } else {
          return (com.google.protobuf.ByteString) ref;
        }
      }
<code>optional .org.anychat.protobuf.ws.ChatMessageData message = 2;</code>
AnyChatServer/src/main/java/org/anychat/protobuf/ws/LoginChatProto.java