syntax_data: {"ast_node_type":"other","tokens":[{"end":61,"kind":"keyword","start":0,"text":"match"}]}
source_snippet:                     match self.tcx().type_of_opaque(def_id) {
context_before:                     // the auto trait bounds in question.
context_after:                         Ok(ty) => ty::Binder::dummy(AutoImplConstituents {