def valid_test_filter(_, __, event_dict):
    """ This is a test filter that is inline with the construction requirements
        of Structlog processors. If processor ingestion is correct, the 
        corresponding log response will have 'is_valid=True' in the returned
        event dictionary.

    Args:
        event_dict (dict): Logging metadata accumulated
    Returns:
        Updated event metadata (dict)
    """
    event_dict['is_valid'] = True
    return event_dict