{"ast_node_type":"other","tokens":[{"end":53,"kind":"keyword","start":0,"text":"[LangItem::Fn,"}]}
    [LangItem::Fn, LangItem::FnMut, LangItem::FnOnce]
pub(crate) fn fn_traits(db: &dyn DefDatabase, krate: Crate) -> impl Iterator<Item = TraitId> + '_ {
        .into_iter()