public Builder clearMessage() {
        if (messageBuilder_ == null) {
          message_ = null;
          onChanged();
        } else {
          message_ = null;
          messageBuilder_ = null;
        }

        return this;
      }
<code>optional .org.anychat.protobuf.ws.ChatMessageData message = 2;</code>
AnyChatServer/src/main/java/org/anychat/protobuf/ws/LoginChatProto.java