{"ast_node_type":"variable","tokens":[{"end":58,"kind":"keyword","start":0,"text":"if"}]}
        if let PatKind::Binding(_, _, ident, _) = p.kind {
    fn visit_pat(&mut self, p: &'tcx hir::Pat<'tcx>) {
            let var_ty = self.assign(p.span, p.hir_id, None);