{"ast_node_type":"other","tokens":[{"end":82,"kind":"keyword","start":0,"text":"ItemKind::ForeignMod(ForeignMod"}]}
            ItemKind::ForeignMod(ForeignMod { extern_span, abi, safety, .. }) => {
            }
                let old_item = mem::replace(&mut self.extern_mod_span, Some(item.span));