syntax_data: {"ast_node_type":"other","tokens":[{"end":74,"kind":"keyword","start":0,"text":"ty::Adt(def,"}]}
source_snippet:             ty::Adt(def, args) => ty::Binder::dummy(AutoImplConstituents {
context_after:                 types: def.all_fields().map(|f| f.ty(self.tcx(), args)).collect(),