syntax_data: {"ast_node_type":"other","tokens":[{"end":97,"kind":"keyword","start":0,"text":".map(|(elem_ty,"}]}
source_snippet:                 .map(|(elem_ty, elem_valtree)| ty::Const::new_value(tcx, *elem_valtree, elem_ty))
context_before:             let fields = iter::zip(*elem_tys, branches)
context_after:                 .collect::<Vec<_>>();