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: camera.rs
    path of file: ./repos/amethyst/amethyst_rendy/benches
    
    the code of the file until where you have to start completion: use amethyst_core::{
    math::{convert, Matrix4, Translation3, UnitQuaternion},
  
    
fn setup() -> Transform {
    // Setup common inputs for most of the tests.
    //
    // Sets up a test camera is positioned at (0,0,3) in world space.
    // A camera without rotation is pointing in the (0,0,-1) direction.
    Transform::new(
        Translation3::new(0.0, 0.0, 3.0),
        // Apply _no_ rotation
        UnitQuaternion::identity(),
        [1.0, 1.0, 1.0].into(),
    )
}