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: mod.rs
    path of file: ./repos/uefi-rs/uefi/src/proto/device_path
    
    the code of the file until where you have to start completion: //! Device Path protocol
//!
//! A UEFI device path is a very flexible structure for
    
    fn create_raw_device_path() -> Vec<u8> {
        let mut raw_data = Vec::new();

        // First path instance.
        add_node(&mut raw_data, 0xa0, 0xb0, &[10, 11]);
        add_node(&mut raw_data, 0xa1, 0xb1, &[20, 21, 22, 23]);
        add_node(
            &mut raw_data,
            DeviceType::END.0,
            DeviceSubType::END_INSTANCE.0,
            &[],
        );
        // Second path instance.
        add_node(&mut raw_data, 0xa2, 0xb2, &[30, 31]);
        add_node(&mut raw_data, 0xa3, 0xb3, &[40, 41, 42, 43]);
        add_node(
            &mut raw_data,
            DeviceType::END.0,
            DeviceSubType::END_ENTIRE.0,
            &[],
        );

        raw_data
    }