def METHOD_NAME(self, key: str, tag: any) -> None:
    """Set a tag under the current run.
    Args:
        key (str): Name of the tag.
        tag (any): Tag value (string, but will be string-ified if not).
            All backend stores will support values up to length 5000, but some
            may support larger values.
    """
    self.log(key=key, value=tag, data_type=AnalyticsDataType.TAG)