enum ExampleTargets: String, TargetsType {

    // String version should be the same as target name. It's case sensitive. 
    case targetBox = "TargetBox" 
    case anotherTarget = "AnotherTarget"
}

private var box: TargetsBox<TargetBoxEmulation, ExampleTargets>?

private func prepareTargetBox() {
    print("Hello Box Target")
}

private func prepareForOthers() {
    print("Hello Others Target")
}

private func createTargetBox() {

    // This will create weak reference on function in your controller. 
    let targetBoxFunction = WeakFunction(
        signature: ExampleViewController.prepareTargetBox, 
        object: self
    )
    
    /*
    @param function Created early weak function.
    @param trigger Selector after which our weaked function will be called, function must be dynamic or marked as dynamic
    @param target The target, what be defined early, on which the function should be called
    */
    let containerTargetBox = TargetingFunctionContainer(
        function: targetBoxFunction, 
        trigger: #selector(ExampleViewController.viewDidLoad), 
        target: ExampleTargets.targetBox
    )
    
    let otherTargetFunction = WeakFunction(
        signature: ExampleViewController.prepareForOthers,
        object: self
    )
    
    let containerOthers = TargetingFunctionContainer(
        function: otherTargetFunction,
        trigger: #selector(ExampleViewController.viewDidLoad),
        target: ExampleTargets.anotherTarget
    )
    
    self.box = TargetsBox(containers: [containerTargetBox, containerOthers])
}