## detect_file_format(file_name) {#str} Detects and returns the information about a format of a document stored in a disk file. ```python def detect_file_format(self, file_name: str): ... ``` | Par......docx') self.assertEqual('.docx', aw.FileFormatUtil...sign(src_file_name=MY_DIR + 'Document.docx', dst_file_name=ARTIFACTS_DIR...