`pysolr.extract` returns dict with empty values for `contents` and `metadata`

Using pysolr 3.10.0 with Solr 9.8.0, I'm getting empty values for the values `'contents'` and `'metadata'`. This is because Solr returns values for `'file'` and `'file_metadata'` instead of the aforementioned keys. ``` with open(file_path, 'rb') as temp_file: response = solr.extract(file_obj = temp_file,extractOnly=True) ```