docs: def get_factory_by_class(self, klass):
          """
          Returns a custom factory for class. By default it will return the class itself.
  
          :param klass: Class type
          :type klass: type
          :return: Class factory
          :rtype: callable
          """
          for check, factory in self._factories.items():
              if klass is check:
                  return factory(self, klass)
          for check, factory in self._factories.items():
              if issubclass(klass, check):
                  return factory(self, klass)
          return klass