{"ast_node_type":"variable","tokens":[{"end":67,"kind":"keyword","start":0,"text":"if"}]}
                if let hir::ExprKind::Path(qpath) = &path_expr.kind
            hir::ExprKind::Call(path_expr, [_])
                    && let Some(did) = cx.qpath_res(qpath, path_expr.hir_id).opt_def_id()