public Builder mergeTech(org.bwapi.proxy.messages.GameMessages.TechType value) {
        if (techBuilder_ == null) {
          if (((bitField0_ & 0x00000004) == 0x00000004) &&
              tech_ != org.bwapi.proxy.messages.GameMessages.TechType.getDefaultInstance()) {
            tech_ =
              org.bwapi.proxy.messages.GameMessages.TechType.newBuilder(tech_).mergeFrom(value).buildPartial();
          } else {
            tech_ = value;
          }
          onChanged();
        } else {
          techBuilder_.mergeFrom(value);
        }
        bitField0_ |= 0x00000004;
        return this;
      }