interface Depends {
	depends() []Depends
}

struct Signal<T> {
}

fn (x Signal<T>) depends() []Depends {
	return []
}

struct Add<T> {
	a Signal<T>
	b Signal<T>
}

fn (a Add<T>) depends() []Depends {
	return [a.a, a.b]
}

fn test_generics_interface_decl() {
	assert true
}