{"ast_node_type":"other","tokens":[{"end":77,"kind":"keyword","start":0,"text":"self.sess.source_map().guess_head_span(self.extern_mod_span.unwrap())"}]}
        self.sess.source_map().guess_head_span(self.extern_mod_span.unwrap())
    fn current_extern_span(&self) -> Span {
    }