{"ast_node_type":"other","tokens":[{"end":99,"kind":"keyword","start":0,"text":"self.lower_generic_args_of_path(span,"}]}
            self.lower_generic_args_of_path(span, trait_def_id, &[], trait_segment, Some(self_ty));
        let (generic_args, _) =
        if let Some(c) = trait_segment.args().constraints.first() {