text: """GM2MField support for autocomplete fields."""
  
  
  class GM2MFieldMixin(object):
      """GM2MField ror FutureModelForm."""
  
      def value_from_object(self, instance, name):
          """Return the list of objects in the GM2MField relation."""
          return None if not instance.pk else [
              x for x in getattr(instance, name).all()]
  
      def save_relation_data(self, instance, name, value):
          """Save the relation into the GM2MField."""
          setattr(instance, name, value)
  