{"ast_node_type":"other","tokens":[{"end":30,"kind":"keyword","start":0,"text":"for"}]}
        for sf in s.fields() {
    fn check_struct_def(&mut self, cx: &LateContext<'_>, s: &hir::VariantData<'_>) {
            self.check_snake_case(cx, "structure field", &sf.ident);