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/prisma-engines/query-engine/request-handlers/src/protocols/graphql/schema_renderer
    
    the code of the file until where you have to start completion: mod enum_renderer;
mod field_renderer;
mod object_renderer;
mod type_renderer;

use enum_renderer::*;
use field_renderer::*;
use object_renderer::*;
use query_core::schema::*;
use std::collections::HashMap;
use type_renderer::*;

/// Top le
    
pub fn render_graphql_schema(query_schema: &QuerySchema) -> String {
    let mut context = RenderContext::new();
    query_schema.as_renderer().render(&mut context);

    // Add custom scalar types (required for graphql.js implementations)
    format!(
        "{}\n\nscalar DateTime\nscalar Json\nscalar UUID\nscalar BigInt\nscalar Decimal\nscalar Bytes",
        context.format()
    )
}