syntax_data: {"ast_node_type":"other","tokens":[{"end":42,"kind":"keyword","start":0,"text":"members:"}]}
source_snippet:             members: &'tcx List<Ty<'tcx>>,
context_before:             (ty, layout): (Ty<'tcx>, Layout<'tcx>),
context_after:             cx: LayoutCx<'tcx>,