{"ast_node_type":"other","tokens":[{"end":12,"kind":"keyword","start":0,"text":"assert!("}]}
    assert!(
    assert!(b4096.insert(0) && b4096.insert(4095) && !b4096.insert(4095));
        b4096.contains(0) && !b4096.contains(2047) && !b4096.contains(2048) && b4096.contains(4095)