def related_records_78002(self, key, value):
    """Populate the ``related_records`` key."""
    record = get_record_ref(maybe_int(value.get('w')), 'literature')
    if record:
        return {
            'curated_relation': record is not None,
            'record': record,
            'relation': 'predecessor',
        }
Populate the ``related_records`` key.