code: def validator_factory(name, bases=None, namespace={}):
      
      Validator = get_Validator_class()
  
      if bases is None:
          bases = (Validator,)
      elif isinstance(bases, tuple):
          bases += (Validator,)
      else:
          bases = (bases, Validator)
  
      docstrings = [x.__doc__ for x in bases if x.__doc__]
      if len(docstrings) > 1 and '__doc__' not in namespace:
          namespace.update({'__doc__': '\n'.join(docstrings)})
  
      return type(name, bases, namespace)
docs: Dynamically create a :class:`~cerberus.Validator` subclass.
          Docstrings of mixin-classes will be added to the resulting
          class' one if ``__doc__`` is not in :obj:`namespace`.
  
      :param name: The name of the new class.
      :type name: :class:`str`
      :param bases: Class(es) with additional and overriding attributes.
      :type bases: :class:`tuple` of or a single :term:`class`
      :param namespace: Attributes for the new class.
      :type namespace: :class:`dict`
      :return: The created class.