syntax_data: {"ast_node_type":"other","tokens":[{"end":19,"kind":"keyword","start":0,"text":")"}]}
source_snippet:     ) -> Ty<'tcx> {
context_before:         normalize: impl FnMut(Ty<'tcx>) -> Ty<'tcx>,
context_after:         match self.ptr_metadata_ty_or_tail(tcx, normalize) {