def parse_potential_file_ids(self):
        """Parses metadata for any fields that may correspond to a label-wide
        media file_id.

        Returns:
            a list of potential file_id strings
        """
        file_ids = []
        for k, v in self.metadata_dict.items():
            if k.lower() in self._POTENTIAL_FILENAME_KEYS:
                file_ids.append(v)

        return file_ids
Parses metadata for any fields that may correspond to a label-wide
        media file_id.

        Returns:
            a list of potential file_id strings
        
fiftyone/utils/openlabel.py