@classmethod
def get_simple_parameters(cls):
    """
        Return or yield a list of names of simple parameter fields of every
        actor that uses this model.

        When the list contains names for which no parameter field is
        defined, then Lino creates that parameter field as a copy of
        the database field of the same name.

        This is also called by :meth:`get_title_tags`, you don't need to
        manually define title tags for simple parameters.

        """
    return []
