syntax_data: {"ast_node_type":"other","tokens":[{"end":56,"kind":"keyword","start":0,"text":"ty::Binder::dummy(AutoImplConstituents"}]}
source_snippet:                 ty::Binder::dummy(AutoImplConstituents {
context_before:             ty::Adt(def, args) if def.is_phantom_data() => {
context_after:                     types: args.types().collect(),