{"ast_node_type":"other","tokens":[{"end":67,"kind":"keyword","start":0,"text":"impl<'a,"}]}
impl<'a, 'tcx> Visitor<'tcx> for InferBorrowKindVisitor<'a, 'tcx> {
    fn visit_expr(&mut self, expr: &'tcx hir::Expr<'tcx>) {