public Builder mergeHandleUserJoin(JInPiqi.handle_user_join value) {
        if (handleUserJoinBuilder_ == null) {
          if (((bitField0_ & 0x00000002) == 0x00000002) &&
              handleUserJoin_ != JInPiqi.handle_user_join.getDefaultInstance()) {
            handleUserJoin_ =
              JInPiqi.handle_user_join.newBuilder(handleUserJoin_).mergeFrom(value).buildPartial();
          } else {
            handleUserJoin_ = value;
          }
          onChanged();
        } else {
          handleUserJoinBuilder_.mergeFrom(value);
        }
        bitField0_ |= 0x00000002;
        return this;
      }