code: def update(self, **kwargs):
          
          data = []
          for cl in self:
              for classification_item in cl.list:
                  class_item_dict = dict()
                  for field in classification_item.fields:
                      class_item_dict[field] = getattr(classification_item, field)
                  data.append(class_item_dict)
          self.load(self.client.put(self.url, data=data))
          return self
docs: Update a resource by passing in modifications via keyword arguments.