public Builder mergeTilePos(org.bwapi.proxy.messages.BasicTypes.TilePosition value) {
        if (tilePosBuilder_ == null) {
          if (((bitField0_ & 0x00000008) == 0x00000008) &&
              tilePos_ != org.bwapi.proxy.messages.BasicTypes.TilePosition.getDefaultInstance()) {
            tilePos_ =
              org.bwapi.proxy.messages.BasicTypes.TilePosition.newBuilder(tilePos_).mergeFrom(value).buildPartial();
          } else {
            tilePos_ = value;
          }
          onChanged();
        } else {
          tilePosBuilder_.mergeFrom(value);
        }
        bitField0_ |= 0x00000008;
        return this;
      }