syntax_data: {"ast_node_type":"other","tokens":[{"end":32,"kind":"keyword","start":0,"text":"ty::Closure(..)"}]}
source_snippet:             ty::Closure(..) => {
context_before:         let trait_ref = match *self_ty.kind() {
context_after:                 self.closure_trait_ref_unnormalized(self_ty, obligation.predicate.def_id())