code: def relation_to_intermediary(fk):
      
      return Relation(
          right_col=format_name(fk.parent.table.fullname),
          left_col=format_name(fk._column_tokens[1]),
          right_cardinality='?',
          left_cardinality='*',
      )
docs: Transform an SQLAlchemy ForeignKey object to it's intermediary representation.