public Builder mergeBuildType(org.bwapi.proxy.messages.GameMessages.UnitType value) {
        if (buildTypeBuilder_ == null) {
          if (((bitField3_ & 0x00000100) == 0x00000100) &&
              buildType_ != org.bwapi.proxy.messages.GameMessages.UnitType.getDefaultInstance()) {
            buildType_ =
              org.bwapi.proxy.messages.GameMessages.UnitType.newBuilder(buildType_).mergeFrom(value).buildPartial();
          } else {
            buildType_ = value;
          }
          onChanged();
        } else {
          buildTypeBuilder_.mergeFrom(value);
        }
        bitField3_ |= 0x00000100;
        return this;
      }