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: custom_asset_reader.rs
    path of file: ./repos/bevy/examples/asset
    
    the code of the file until where you have to start completion: //! Implements a custom asset io loader.
//! An [`AssetReader`] is what the asset server uses to read the raw byte
    
fn setup(mut commands: Commands, asset_server: Res<AssetServer>) {
    commands.spawn(Camera2dBundle::default());
    commands.spawn(SpriteBundle {
        texture: asset_server.load("branding/icon.png"),
        ..default()
    });
}