docs: public boolean isPartitionedOnFields(FieldSet fields) {
  		if (this.partitioning.isPartitionedOnKey() && fields.isValidSubset(this.partitioningFields)) {
  			return true;
  		} else if (this.uniqueFieldCombinations != null) {
  			for (FieldSet set : this.uniqueFieldCombinations) {
  				if (fields.isValidSubset(set)) {
  					return true;
  				}
  			}
  			return false;
  		} else {
  			return false;
  		}
  	}