public Builder mergeRequiredTech(org.bwapi.proxy.messages.GameMessages.TechType value) {
        if (requiredTechBuilder_ == null) {
          if (((bitField0_ & 0x00000080) == 0x00000080) &&
              requiredTech_ != org.bwapi.proxy.messages.GameMessages.TechType.getDefaultInstance()) {
            requiredTech_ =
              org.bwapi.proxy.messages.GameMessages.TechType.newBuilder(requiredTech_).mergeFrom(value).buildPartial();
          } else {
            requiredTech_ = value;
          }
          onChanged();
        } else {
          requiredTechBuilder_.mergeFrom(value);
        }
        bitField0_ |= 0x00000080;
        return this;
      }