{"ast_node_type":"other","tokens":[{"end":81,"kind":"keyword","start":0,"text":"items_to_check.extend(unsolved_items.extract_if(..,"}]}
        items_to_check.extend(unsolved_items.extract_if(.., |&mut local_def_id| {
            symbol_visitor.check_impl_or_impl_item_live(local_def_id)