def is_searchable(self):
        """A bool value that indicates whether the person has enough data and
        can be sent as a query to the API."""
        filter_func = lambda field: field.is_searchable
        return bool(filter(filter_func, self.names) or 
                    filter(filter_func, self.emails) or
                    filter(filter_func, self.phones) or
                    filter(filter_func, self.usernames))
A bool value that indicates whether the person has enough data and
        can be sent as a query to the API.