docs: def make_user_role_table(table_name='user', id_column_name='id'):
      """
          Create the user-role association table so that
          it correctly references your own UserMixin subclass.
  
      """
  
      return db.Table('fp_user_role',
                         db.Column(
                             'user_id', db.Integer, db.ForeignKey('{}.{}'.format(
                                 table_name, id_column_name))),
                         db.Column(
                         'role_id', db.Integer, db.ForeignKey('fp_role.id')),
                         extend_existing=True)