You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: lib.rs
    path of file: ./repos/ink/integration-tests/trait-flipper
    
    the code of the file until where you have to start completion: #![cfg_attr(not(feature = "std"), no_std, no_main)]
#![allow(clippy::new_without_default)]

#[ink::trait_definition]
pub trait Flip {
    /// Flips the current value of the Flipper's boolean.
   
    
        fn it_works() {
            let mut flipper = Flipper::new();
            // Can call using universal call syntax using the trait.
            assert!(!<Flipper as Flip>::get(&flipper));
            <Flipper as Flip>::flip(&mut flipper);
            // Normal call syntax possible to as long as the trait is in scope.
            assert!(flipper.get());
        }