{"ast_node_type":"other","tokens":[{"end":47,"kind":"keyword","start":0,"text":"debug!(\"visit_generic_arg({:?})\","}]}
        debug!("visit_generic_arg({:?})", arg);
    fn visit_generic_arg(&mut self, arg: &'ast GenericArg) {
        let prev = replace(&mut self.diag_metadata.currently_processing_generic_args, true);