def help_text_metadata(label=None, description=None, example=None):
    """
    Standard interface to help specify the required metadata fields for helptext to
    work correctly for a model.

    :param str label: Alternative name for the model.
    :param str description: Long description of the model.
    :param example: A concrete example usage of the model.
    :return dict: Dictionary of the help text metadata
    """
    return {
        'label': label,
        'description': description,
        'example': example
    }