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/bevy/crates/bevy_core_pipeline/src/fullscreen_vertex_shader
    
    the code of the file until where you have to start completion: use bevy_asset::Handle;
use bevy_render::{prelude::Shader, render_resource::VertexState};

pub const FULLSCREEN_SHADER_HANDLE: Handle<Shader> = Handle
    
pub fn fullscreen_shader_vertex_state() -> VertexState {
    VertexState {
        shader: FULLSCREEN_SHADER_HANDLE,
        shader_defs: Vec::new(),
        entry_point: "fullscreen_vertex_shader".into(),
        buffers: Vec::new(),
    }
}