{"ast_node_type":"variable","tokens":[{"end":71,"kind":"keyword","start":0,"text":"///"}]}
    /// if let &[sym::core, sym::option, sym::Option] = &def_path[..] {
    /// let def_path = cx.get_def_path(def_id);
    ///     // The given `def_id` is that of an `Option` type