docs: public void consolidate(RemoveAttributeTransform preceding)
      {
          for(int i = 0; i < catIndexMap.length; i++)
              catIndexMap[i] = preceding.catIndexMap[catIndexMap[i]];
          for(int i = 0; i < numIndexMap.length; i++)
              numIndexMap[i] = preceding.numIndexMap[numIndexMap[i]];
      }