docs: def load(self, format=None, *, kwargs={}):
          '''
          deserialize object from the file.
  
          auto detect format by file extension name if `format` is None.
          for example, `.json` will detect as `json`.
  
          * raise `FormatNotFoundError` on unknown format.
          * raise `SerializeError` on any serialize exceptions.
          '''
          return load(self, format=format, kwargs=kwargs)