struct Registry[T] {
mut:
    events []EventHandler[T]
}

struct EventHandler[T] {
    name T
}

fn (mut r Registry[T]) test() {
    mut events := []EventHandler[string]{}
    r.events << EventHandler[string]{
        name: 'test'
    }
    assert 1 == r.events.len

    r.events.clear()
    events.clear()

    assert events.len == r.events.len
}

fn test_main() {
    mut registry := &Registry[string]{
        events: []
    }
    registry.test()
    assert dump(registry.events).len == 0
}