def METHOD_NAME(releases: List[Release]) -> List[Release]:
    """Filter test releases out of a list of `Release`s.
    Args:
        releases: A list of `Release`s.
    Returns:
        The filtered list of `Release`s. Any `Release` that has a description
        containing the string `"Do not use this release. This is a test."` will be
        excluded.
    """
    # Exclude releases tagged with test string.
    return [
        rls
        for rls in releases
        if "Do not use this release. This is a test." not in rls.description
    ]