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: main.rs
    path of file: ./repos/design-patterns-rust/behavioral/visitor
    
    the code of the file until where you have to start completion: #![allow(unused)]

mod visitor;

use visitor::Visitor;

/// A struct of two integer values.
///
/// It's going to be an output of `Visitor` trait which is defined for the type
/// in `visitor.rs`.
#[derive(Default, Debug)]
pub struct TwoValuesStruct {
    a: i32,
    b: i32,
}

/// A struct of values array.
///
/// It's going to be an output of `Visitor` trait which is defined for the type
/// in `visitor.rs`.
#[derive(Default, Debug)]
pub struct TwoValuesArray {
    ab: [i32; 2],
}

/// `Deseria
    
fn main() {
    let deserializer = StringDeserializer::create(TwoValuesStruct::default());
    let result = deserializer.parse_str("123 456");
    println!("{:?}", result);

    let deserializer = VecDeserializer::create(TwoValuesStruct::default());
    let result = deserializer.parse_vec(vec![123, 456]);
    println!("{:?}", result);

    let deserializer = VecDeserializer::create(TwoValuesArray::default());
    let result = deserializer.parse_vec(vec![123, 456]);
    println!("{:?}", result);

    println!(
        "Error: {}",
        deserializer.parse_str("123 456").err().unwrap()
    )
}