{"ast_node_type":"function","tokens":[{"end":66,"kind":"keyword","start":0,"text":"fn"}]}
    fn docs(self, db: &dyn HirDatabase) -> Option<Documentation> {
impl HasDocs for hir::ExternCrateDecl {
        let crate_docs = docs_from_attrs(&self.resolved_crate(db)?.root_module().attrs(db));