syntax_data: {"ast_node_type":"variable","tokens":[{"end":80,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:         let args = interner.mk_args_from_iter(args.into_iter().map(Into::into));
context_before:     ) -> AliasTy<I> {
context_after:         Self::new_from_args(interner, def_id, args)