{"ast_node_type":"other","tokens":[{"end":51,"kind":"keyword","start":0,"text":"println!(\"Hello"}]}
    println!("Hello {} is {:.*}",    "x", 5, 0.01);
    println!("Hello {0} is {2:.1$}", "x", 5, 0.01);
    println!("Hello {} is {2:.*}",   "x", 5, 0.01);