Hi, can you explain the fallowing rust code in details!
```Rust
#[derive(Debug, Clone)]
pub struct Person {
    name: NAME_1,
    age: i32,
}

impl Person {
    pub fn new(name: NAME_1, age: i32) -> Self {
        Person { name, age }
    }
}

fn main() {
    println!("Hello, world!");
}
``` Make sure your entire response is wrapped in JSON format.
user