private com.google.protobuf.RepeatedFieldBuilder<
          org.bwapi.proxy.messages.GameMessages.TechTypeData, org.bwapi.proxy.messages.GameMessages.TechTypeData.Builder, org.bwapi.proxy.messages.GameMessages.TechTypeDataOrBuilder> 
          getTechsFieldBuilder() {
        if (techsBuilder_ == null) {
          techsBuilder_ = new com.google.protobuf.RepeatedFieldBuilder<
              org.bwapi.proxy.messages.GameMessages.TechTypeData, org.bwapi.proxy.messages.GameMessages.TechTypeData.Builder, org.bwapi.proxy.messages.GameMessages.TechTypeDataOrBuilder>(
                  techs_,
                  ((bitField0_ & 0x00004000) == 0x00004000),
                  getParentForChildren(),
                  isClean());
          techs_ = null;
        }
        return techsBuilder_;
      }