{"ast_node_type":"other","tokens":[{"end":77,"kind":"keyword","start":0,"text":"MonoItem::Fn(ref"}]}
            MonoItem::Fn(ref instance) => (instance.def_id(), instance.args),
        let (def_id, args) = match *self {
            MonoItem::Static(def_id) => (def_id, GenericArgs::empty()),