code: public ExtendedRelation addTilesRelationship(String baseTableName,
  			String relatedTilesTableName, UserMappingTable userMappingTable) {
  		return addRelationship(baseTableName, relatedTilesTableName,
  				userMappingTable, RelationType.TILES);
  	}
docs: Adds a tiles relationship between the base table and related tiles table.
  Creates the user mapping table if needed.
  
  @param baseTableName
  base table name
  @param relatedTilesTableName
  related tiles table name
  @param userMappingTable
  user mapping table
  @return The relationship that was added
  @since 3.2.0