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: security_code.rs
    path of file: ./repos/design-patterns-rust/structural/facade
    
    the code of the file until where you have to start completion: pub struct SecurityCode {
    code: u32,
}

impl SecurityCode {
    pub fn new(code: u32) -> Self {
        Self { code }
    }

    pub fn check(&self
    
    pub fn check(&self, code: u32) -> Result<(), String> {
        if self.code != code {
            return Err("Security code is incorrect".into());
        }

        println!("Security code verified");
        Ok(())
    }