public Builder mergeUnitType(org.bwapi.proxy.messages.GameMessages.UnitType value) {
        if (unitTypeBuilder_ == null) {
          if (((bitField0_ & 0x00000020) == 0x00000020) &&
              unitType_ != org.bwapi.proxy.messages.GameMessages.UnitType.getDefaultInstance()) {
            unitType_ =
              org.bwapi.proxy.messages.GameMessages.UnitType.newBuilder(unitType_).mergeFrom(value).buildPartial();
          } else {
            unitType_ = value;
          }
          onChanged();
        } else {
          unitTypeBuilder_.mergeFrom(value);
        }
        bitField0_ |= 0x00000020;
        return this;
      }