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/sway/sway-types/src
    
    the code of the file until where you have to start completion: use fuel_asm::Word;
use fuel_crypto::Hasher;
use fuel_tx::{Bytes32, ContractId};
use serde::{Deserialize, Serialize};
use std::hash::Hash;
use std::path::{Path, PathBuf};
use std::{io, iter, slice};

pub mod constants;

pub mod ident;
pub mod u256;
pub use ident::*;

pub mod integer_bits;

pub mod source_engine;
pub u
    
    pub fn bytes(&self) -> io::Result<slice::Iter<'_, u8>> {
        Ok(self
            .path
            .as_path()
            .to_str()
            .ok_or_else(|| {
                io::Error::new(
                    io::ErrorKind::Other,
                    "Failed to get the string representation of the path!",
                )
            })?
            .as_bytes()
            .iter())
    }