def METHOD_NAME(
    cls,
    base: str,
    monolingual: bool,  # noqa: ARG003
    errors: list | None = None,
    fast: bool = False,
) -> bool:
    """Check whether base is valid."""
    if not base:
        return True
    try:
        if not fast:
            AppStoreParser(base)
    except Exception as exception:
        if errors is not None:
            errors.append(exception)
        report_error(cause="File parse error")
        return False
    return True