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: shell.rs
    path of file: ./repos/cross/src
    
    the code of the file until where you have to start completion: // This file was adapted from:
//   https://github.com/rust-lang/cargo/blob/ca4edabb28fc96fdf2a1d56fe385
    
    pub fn debug<T: fmt::Display>(&mut self, message: T) -> Result<()> {
        match self.verbosity {
            Verbosity::Quiet | Verbosity::Normal => Ok(()),
            _ => {
                println!("{}", message);
                Ok(())
            }
        }
    }