syntax_data: {"ast_node_type":"other","tokens":[{"end":40,"kind":"keyword","start":0,"text":"ty::Adt(def,"}]}
source_snippet:                 ty::Adt(def, _args) => {
context_before:                 ty::FnPtr(..) => return ControlFlow::Continue(()),
context_after:                     let ty_def_id = def.did();