code: def copy_from_dict(self, attributes):
      
      for attribute_name, attribute_value in attributes.items():
        # Not using startswith to improve performance.
        if attribute_name[0] == '_':
          continue
        setattr(self, attribute_name, attribute_value)
docs: Copies the attribute container from a dictionary.
      Args:
        attributes (dict[str, object]): attribute values per name.