public Builder mergeMessage(org.anychat.protobuf.ws.LoginChatProto.ChatMessageData value) {
        if (messageBuilder_ == null) {
          if (message_ != null) {
            message_ =
              org.anychat.protobuf.ws.LoginChatProto.ChatMessageData.newBuilder(message_).mergeFrom(value).buildPartial();
          } else {
            message_ = value;
          }
          onChanged();
        } else {
          messageBuilder_.mergeFrom(value);
        }

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