struct Man {
    name: String
}

impl Man {
    fn new(name: String) -> Man {
        return Man { name: name };
    }
}

struct Employee {
    parent: Man,
    position: String
}

impl Employee {
    fn new(name: String) -> Employee {
        return Employee {
            parent: Man::new(name),
            position: String::from("unknown")
        };
    }

    fn name(&self) -> &String {
        return &self.parent.name;
    }
}

let employee = Employee::new(
    String::from("Max"));
//employee.name() is "Max"
println!("name is '{}'", employee.name());
println!("position is '{}'", employee.position);