syntax_data: {"ast_node_type":"other","tokens":[{"end":94,"kind":"keyword","start":0,"text":"Some(args.iter().rev().chain(opt_ty.map(|term|"}]}
source_snippet:                             Some(args.iter().rev().chain(opt_ty.map(|term| match term.kind() {
context_after:                                 ty::TermKind::Ty(ty) => ty.into(),