code: function() {
  			var args = arguments;
  			this.foreach( function( widget ) {
  				if ( widget.setup )
  					widget.setup.apply( widget, args );
  			} );
  		}
docs: Calls the {@link CKEDITOR.dialog.definition.uiElement#setup} method of each
  of the UI elements, with the arguments passed through it.
  It is usually being called when the dialog is opened, to put the initial value inside the field.
  
  dialogObj.setupContent();
  
  var timestamp = ( new Date() ).valueOf();
  dialogObj.setupContent( timestamp );