[flexcomponents] styleChanged called twice during initialization process

[Muzak]

Not sure if this is something I should be worried about, but I noticed that 
when extending UIComponent (or other visual classes) 
that during initaliazation the styleChanged method is called twice, with a null 
argument.

When running the simple test code below, I get the following output.

TestComponent ::: CONSTRUCTOR
    - className: TestComponent
TestComponent ::: styleChanged
    - style: null
TestComponent ::: createChildren
TestComponent ::: styleChanged
    - style: null
TestComponent ::: measure
TestComponent ::: updateDisplayList
    - unscaledWidth: 100
    - unscaledHeight: 100

Is this something we should be worried about, unnecessary method calls?

regards,
Muzak


// test component
package com.muzakdeezign.test {

 import mx.core.UIComponent;

 public class TestComponent extends UIComponent {

  //====================================
  // CONSTRUCTOR
  //====================================
  public function TestComponent() {
   trace("TestComponent ::: CONSTRUCTOR");
   super();
   trace("    - className: "+this.className);
  }

  //----------------------------------------------------------------
  //
  // createChildren()
  //
  //----------------------------------------------------------------
  override protected function createChildren():void {
   trace("TestComponent ::: createChildren");
   super.createChildren();
  }

  //----------------------------------------------------------------
  //
  // measure()
  //
  //----------------------------------------------------------------
  override protected function measure():void {
   trace("TestComponent ::: measure");
   super.measure();
   this.measuredWidth = this.measuredMinWidth = 100;
   this.measuredHeight = this.measuredMinHeight = 100;
  }

  //----------------------------------------------------------------
  //
  // updateDisplayList()
  //
  //----------------------------------------------------------------
  override protected function updateDisplayList(w:Number, h:Number):void {
   trace("TestComponent ::: updateDisplayList");
   trace("    - unscaledWidth: "+w);
   trace("    - unscaledHeight: "+h);
   super.updateDisplayList(w, h);
  }

  //----------------------------------------------------------------
  //
  // styleChanged()
  //
  //----------------------------------------------------------------
  override public function styleChanged(styleProp:String):void {
   trace("TestComponent ::: styleChanged");
   trace("    - style: "+styleProp);
   super.styleChanged(styleProp);
  }

 }

}