public Builder mergeTechType(org.bwapi.proxy.messages.GameMessages.TechType value) {
        if (techTypeBuilder_ == null) {
          if (((bitField0_ & 0x00000040) == 0x00000040) &&
              techType_ != org.bwapi.proxy.messages.GameMessages.TechType.getDefaultInstance()) {
            techType_ =
              org.bwapi.proxy.messages.GameMessages.TechType.newBuilder(techType_).mergeFrom(value).buildPartial();
          } else {
            techType_ = value;
          }
          onChanged();
        } else {
          techTypeBuilder_.mergeFrom(value);
        }
        bitField0_ |= 0x00000040;
        return this;
      }