code: public void addPostProcessVariant(String variantType, VariantSet variantSet) {
  
  		Map<String, VariantSet> variantMap = new HashMap<>();
  		variantMap.put(variantType, variantSet);
  		addPostProcessVariant(variantMap);
  	}
docs: Add a post process variant
  
  @param variantType
  the variant type
  @param variantSet
  the variant set