q.rs

use std::ops::Deref;

pub struct Base;

impl Base {
    pub fn asdf(&self) {}
}

pub struct LevelOne {
    pub base: Base,
}

impl Deref for LevelOne {
    type Target = Base;

    fn deref(&self) -> &Base {
        &self.base
    }
}

impl LevelOne {
    pub fn qwop(&self) {}
}

pub struct LevelTwo {
    pub base: LevelOne,
}

impl Deref for LevelTwo {
    type Target = LevelOne;

    fn deref(&self) -> &LevelOne {
        &self.base
    }
}

impl LevelTwo {
    pub fn custom() {}
}