Trait Queue 

pub trait Queue {
    // Required method
    fn introduce(scene: &mut Scene);
}

Render -> Scene -> Scene is impl Queue (mean its process in sequence) -> Queue just inroduce your Scene

Required Methods

fn introduce(scene: &mut Scene)

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors