syntax_data: {"ast_node_type":"other","tokens":[{"end":87,"kind":"keyword","start":0,"text":"ty::Adt(ty::AdtDef(Interned(&ty::AdtDefData"}]}
source_snippet:             ty::Adt(ty::AdtDef(Interned(&ty::AdtDefData { did: def_id, .. }, _)), args)
context_before:             // Mangle all nominal types as paths.
context_after:             | ty::FnDef(def_id, args)