{"ast_node_type":"other","tokens":[{"end":77,"kind":"keyword","start":0,"text":"self.by_key(sym::lang).string_value().and_then(LangItem::from_symbol)"}]}
        self.by_key(sym::lang).string_value().and_then(LangItem::from_symbol)
    pub fn lang_item(&self) -> Option<LangItem> {
    }