How to define the interface method with different arguments in AS3?

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I'm trying to define interface in which one method (initPage) needs to have different arguments in every implementation. How can I do this? Using ...args for me is not good, because I'm loosing strong type checking.

public interface IPage {
    function initPage(...args):void;
    function showPage():void;
    function hidePage():void;
    function removePage():void;
}


You know you can implements more than one Interface?

I think you should maintain your actual Interface, minus the "problematic" method, and create another Interfaces, each one with a different method

public interface IPage
{
    function showPage():void;
    function hidePage():void;
    function removePage():void;
}

public interface IPrettyPage
{
    function initPage(p:PrettyArg);
}

public interface IUglyPage
{
    function initPage(u:UglyArg);
}

// your implementation Class
package
{
    public class Page extends Sprite implements IPage, IPrettyPage
    {
        // Implementation
    }
}

Anyway, here's an example with another good idea, BUT is a Java code: http://www.java2s.com/Code/Java/Language-Basics/Implementmultipleinterfaces.htm

I didn't tested, but I'm almost sure this issue is different in AS3.