private com.google.protobuf.RepeatedFieldBuilder<
          org.bwapi.proxy.messages.GameMessages.TechType, org.bwapi.proxy.messages.GameMessages.TechType.Builder, org.bwapi.proxy.messages.GameMessages.TechTypeOrBuilder> 
          getResearchedTechsFieldBuilder() {
        if (researchedTechsBuilder_ == null) {
          researchedTechsBuilder_ = new com.google.protobuf.RepeatedFieldBuilder<
              org.bwapi.proxy.messages.GameMessages.TechType, org.bwapi.proxy.messages.GameMessages.TechType.Builder, org.bwapi.proxy.messages.GameMessages.TechTypeOrBuilder>(
                  researchedTechs_,
                  ((bitField0_ & 0x00100000) == 0x00100000),
                  getParentForChildren(),
                  isClean());
          researchedTechs_ = null;
        }
        return researchedTechsBuilder_;
      }