syntax_data: {"ast_node_type":"other","tokens":[{"end":33,"kind":"keyword","start":0,"text":")"}]}
source_snippet:     ) -> Result<Self, F::Error> {
context_before:         folder: &mut F,
context_after:         ty::util::try_fold_list(self, folder, |tcx, v| tcx.mk_clauses(v))