docs: def exists(cls, excludes_, **filters):
          """ Return `True` if objects matching the provided filters and excludes
          exist if not return false.
  
          Calls the `filter` method by default, but can be overridden for better and
              quicker implementations that may be supported by a database.
  
          :param excludes_: entities without this combination of field name and
              values will be returned
          """
          results = cls.query.filter(**filters).exclude(**excludes_)
          return bool(results)