Make kind_id from kind_name or kind_id.

def _make_kind_id(self, name_or_id):
        """Make kind_id from kind_name or kind_id."""
        if not name_or_id:
            return None
        if name_or_id.isdigit():
            return name_or_id
        return self.kind_name_to_id(name_or_id)