code: def contribute_to_class(self, model, name, **kwargs):
          
          super(LocalizedField, self).contribute_to_class(model, name, **kwargs)
          setattr(model, self.name, self.descriptor_class(self))
docs: Adds this field to the specifed model.
  
          Arguments:
              cls:
                  The model to add the field to.
  
              name:
                  The name of the field to add.