def METHOD_NAME(self, declared_fields, model_info):
    """
    Return the default list of field names that will be used if the
    `Meta.fields` option is not specified.
    """
    return (
        [self.url_field_name] +
        list(declared_fields.keys()) +
        list(model_info.fields.keys()) +
        list(model_info.forward_relations.keys())
    )