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: memory.rs
    path of file: ./repos/wasmtime/examples
    
    the code of the file until where you have to start completion: //! An example of how to interact with wasm memory.
//!
//! Here a small wasm module is used to show how memory is initialized, how to
//! read and write memory through the `Memory` object, and how wasm functions
//! can trap when dealing with out-of-bounds addresses.

// You can execute this example with `cargo run --example memory`

use wasmtime::*;

fn main() -> Result<()> {
    // Create our `store_fn` context and then compile a module and create an
    // instance from the compiled module all in one go.
    let mut store: Store<()> = Store::default();
    let module = Module::from_file(store.en
    
fn main() -> Result<()> {
    // Create our `store_fn` context and then compile a module and create an
    // instance from the compiled module all in one go.
    let mut store: Store<()> = Store::default();
    let module = Module::from_file(store.engine(), "examples/memory.wat")?;
    let instance = Instance::new(&mut store, &module, &[])?;

    // load_fn up our exports from the instance
    let memory = instance
        .get_memory(&mut store, "memory")
        .ok_or(anyhow::format_err!("failed to find `memory` export"))?;
    let size = instance.get_typed_func::<(), i32>(&mut store, "size")?;
    let load_fn = instance.get_typed_func::<i32, i32>(&mut store, "load")?;
    let store_fn = instance.get_typed_func::<(i32, i32), ()>(&mut store, "store")?;

    println!("Checking memory...");
    assert_eq!(memory.size(&store), 2);
    assert_eq!(memory.data_size(&store), 0x20000);
    assert_eq!(memory.data_mut(&mut store)[0], 0);
    assert_eq!(memory.data_mut(&mut store)[0x1000], 1);
    assert_eq!(memory.data_mut(&mut store)[0x1003], 4);

    assert_eq!(size.call(&mut store, ())?, 2);
    assert_eq!(load_fn.call(&mut store, 0)?, 0);
    assert_eq!(load_fn.call(&mut store, 0x1000)?, 1);
    assert_eq!(load_fn.call(&mut store, 0x1003)?, 4);
    assert_eq!(load_fn.call(&mut store, 0x1ffff)?, 0);
    assert!(load_fn.call(&mut store, 0x20000).is_err()); // out of bounds trap

    println!("Mutating memory...");
    memory.data_mut(&mut store)[0x1003] = 5;

    store_fn.call(&mut store, (0x1002, 6))?;
    assert!(store_fn.call(&mut store, (0x20000, 0)).is_err()); // out of bounds trap

    assert_eq!(memory.data(&store)[0x1002], 6);
    assert_eq!(memory.data(&store)[0x1003], 5);
    assert_eq!(load_fn.call(&mut store, 0x1002)?, 6);
    assert_eq!(load_fn.call(&mut store, 0x1003)?, 5);

    // Grow memory.
    println!("Growing memory...");
    memory.grow(&mut store, 1)?;
    assert_eq!(memory.size(&store), 3);
    assert_eq!(memory.data_size(&store), 0x30000);

    assert_eq!(load_fn.call(&mut store, 0x20000)?, 0);
    store_fn.call(&mut store, (0x20000, 0))?;
    assert!(load_fn.call(&mut store, 0x30000).is_err());
    assert!(store_fn.call(&mut store, (0x30000, 0)).is_err());

    assert!(memory.grow(&mut store, 1).is_err());
    assert!(memory.grow(&mut store, 0).is_ok());

    println!("Creating stand-alone memory...");
    let memorytype = MemoryType::new(5, Some(5));
    let memory2 = Memory::new(&mut store, memorytype)?;
    assert_eq!(memory2.size(&store), 5);
    assert!(memory2.grow(&mut store, 1).is_err());
    assert!(memory2.grow(&mut store, 0).is_ok());

    Ok(())
}