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: results.rs
    path of file: ./repos/wasmtime/tests/all/component_model/bindgen
    
    the code of the file until where you have to start completion: use super::{super::REALLOC_AND_FREE, engine};
use anyhow::{anyhow, Error};
use wasmtime::{
    component::{Component, Linker},
    Store,
};

mod empty_error {
    use super::*;
    wasmtime::component::bindgen!({
        inline: "
        package inline:inline;
        world result-playground {
            import imports: interface {
                empty-error: func(a: float64) -> result<float64>;
            }

            export empty-error: func(a: float64) -> result<float64>;
        }",
    });

    #[test]
    fn run() -> Result<(), Error> {
        let engine = engine();
        let component = Component::new(
            &engine,
            r#"
            (component
                (import "imports" (instance $i
                    (export "empty-error" (func (param "a" float64) (result (result float64))))
                ))
                (core module $libc
                    (memory (export "memory") 1)
                )
                (core instance $libc (instantiate $libc))
                (core module $m
                    (import "" "core_empty_error" (func $f (param f64 i32)))
                    (import "libc" "memory" (memory 0))
                    (func (export "core_empty_error_export") (param f64) (result i32)
                        (call $f (local.get 0) (i32.const 8))
                        (i32.const 8)
                    )
                )
                (core func $core_empty_error
                    (canon lower (func $i "empty-error") (memory $libc "memory"))
                )
                (core instance $i (instantiate $m
                    (with "" (instance (export "core_empty_error" (func $core_empty_error))))
                    (with "libc" (instance $libc))
                ))
                (func $f_empty_error
                    (export "empty-error")
                    (param "a" float64)
                    (result (result float64))
                    (canon lift (core func $i "core_empty_error_export") (memory $libc "memory"))
                )
            )
        "#,
        )?;

        #[derive(Default)]
        struct MyImports {}

        impl imports::Host for MyImports {
            fn empty_error(&mut self, a: f64) -> Result<Result<f64, ()>, Error> {
                if a == 0.0 {
                    Ok(Ok(a))
                } else if a == 1.0 {
                    Ok(Err(()))
     
    
    fn run() -> Result<(), Error> {
        let engine = engine();
        let component = Component::new(
            &engine,
            r#"
            (component
                (import "imports" (instance $i
                    (export "empty-error" (func (param "a" float64) (result (result float64))))
                ))
                (core module $libc
                    (memory (export "memory") 1)
                )
                (core instance $libc (instantiate $libc))
                (core module $m
                    (import "" "core_empty_error" (func $f (param f64 i32)))
                    (import "libc" "memory" (memory 0))
                    (func (export "core_empty_error_export") (param f64) (result i32)
                        (call $f (local.get 0) (i32.const 8))
                        (i32.const 8)
                    )
                )
                (core func $core_empty_error
                    (canon lower (func $i "empty-error") (memory $libc "memory"))
                )
                (core instance $i (instantiate $m
                    (with "" (instance (export "core_empty_error" (func $core_empty_error))))
                    (with "libc" (instance $libc))
                ))
                (func $f_empty_error
                    (export "empty-error")
                    (param "a" float64)
                    (result (result float64))
                    (canon lift (core func $i "core_empty_error_export") (memory $libc "memory"))
                )
            )
        "#,
        )?;

        #[derive(Default)]
        struct MyImports {}

        impl imports::Host for MyImports {
            fn empty_error(&mut self, a: f64) -> Result<Result<f64, ()>, Error> {
                if a == 0.0 {
                    Ok(Ok(a))
                } else if a == 1.0 {
                    Ok(Err(()))
                } else {
                    Err(anyhow!("empty_error: trap"))
                }
            }
        }

        let mut linker = Linker::new(&engine);
        imports::add_to_linker(&mut linker, |f: &mut MyImports| f)?;

        let mut store = Store::new(&engine, MyImports::default());
        let (results, _) = ResultPlayground::instantiate(&mut store, &component, &linker)?;

        assert_eq!(
            results
                .call_empty_error(&mut store, 0.0)
                .expect("no trap")
                .expect("no error returned"),
            0.0
        );

        results
            .call_empty_error(&mut store, 1.0)
            .expect("no trap")
            .err()
            .expect("() error returned");

        let e = results
            .call_empty_error(&mut store, 2.0)
            .err()
            .expect("trap");
        assert_eq!(
            format!("{}", e.source().expect("trap message is stored in source")),
            "empty_error: trap"
        );

        Ok(())
    }