syntax_data: {"ast_node_type":"other","tokens":[{"end":44,"kind":"keyword","start":0,"text":"ty::FnPtr(sig_tys,"}]}
source_snippet:             ty::FnPtr(sig_tys, _) => sig_tys
context_before:         match self.coroutine_captures_by_ref_ty().kind() {
context_after:                 .skip_binder()