struct Foo {
    value: u32
}

impl Foo {
    fn method(&mut self, value: &u32) {
        self.value += *value;
    }
}

struct Bar {
    value: u32,
    foo: Foo,
}

impl Bar {
    fn new() -> Self {
        Bar {
            value: 1,
            foo: Foo {
                value: 2,
            },
        }
    }

    fn get_mut(&mut self) -> Option<&mut u32> {
        Some(&mut self.value)
    }

    fn other_helper(&mut self, value: &mut u32) {
        self.foo.method(value);
    }

    fn static_helper(foo: &mut Foo, value: &mut u32) {
        foo.method(value);
    }

    fn helper(&mut self) {
        if let Some(value) = self.get_mut() {
            self.other_helper(&mut self.value);
            //Self::static_helper(&mut self.foo, &mut self.value);
        }
    }

    fn method(&mut self) {

    }
}

fn main() {
    let mut bar = Bar::new();
    bar.method();
}