syntax_data: {"ast_node_type":"other","tokens":[{"end":37,"kind":"keyword","start":0,"text":"sig_tys.map_bound(|sig_tys|"}]}
source_snippet:         sig_tys.map_bound(|sig_tys| {
context_before:         let ty::FnPtr(sig_tys, hdr) = self.signature_parts_ty().kind() else { panic!() };
context_after:             let [resume_ty, tupled_inputs_ty] = *sig_tys.inputs().as_slice() else {