def _make_sample_parser(self):
        """Returns a :class:`TFRecordSampleParser` instance for parsing
        TFRecords read by this importer.
        """
        raise NotImplementedError(
            "subclasses must implement _make_sample_parser()"
        )
Returns a :class:`TFRecordSampleParser` instance for parsing
        TFRecords read by this importer.
        
fiftyone/utils/tf.py