syntax_data: {"ast_node_type":"variable","tokens":[{"end":58,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:         if let ty::RePlaceholder(placeholder) = r.kind() {
context_before:     fn visit_region(&mut self, r: ty::Region<'tcx>) {
context_after:             self.max_universe = self.max_universe.max(placeholder.universe);