private com.google.protobuf.SingleFieldBuilder<
          org.bwapi.proxy.messages.GameMessages.UnitType, org.bwapi.proxy.messages.GameMessages.UnitType.Builder, org.bwapi.proxy.messages.GameMessages.UnitTypeOrBuilder> 
          getWhatBuildsTypeFieldBuilder() {
        if (whatBuildsTypeBuilder_ == null) {
          whatBuildsTypeBuilder_ = new com.google.protobuf.SingleFieldBuilder<
              org.bwapi.proxy.messages.GameMessages.UnitType, org.bwapi.proxy.messages.GameMessages.UnitType.Builder, org.bwapi.proxy.messages.GameMessages.UnitTypeOrBuilder>(
                  whatBuildsType_,
                  getParentForChildren(),
                  isClean());
          whatBuildsType_ = null;
        }
        return whatBuildsTypeBuilder_;
      }