syntax_data: {"ast_node_type":"other","tokens":[{"end":63,"kind":"keyword","start":0,"text":"Res::Def(DefKind::Ctor(_,"}]}
source_snippet:             Res::Def(DefKind::Ctor(_, CtorKind::Const), _) => {
context_before:             // user.
context_after:                 self.user_args_applied_to_ty_of_hir_id(hir_id).map(Box::new)