{"ast_node_type":"function","tokens":[{"end":99,"kind":"keyword","start":0,"text":"pub"}]}
    pub fn resolve_function(self, db: &dyn DefDatabase, start_crate: Crate) -> Option<FunctionId> {
impl LangItem {
        lang_item(db, start_crate, self).and_then(|t| t.as_function())