code: function getNestedEditableIn( editablesContainer, remainingEditables ) {
  		if ( remainingEditables == null )
  			remainingEditables = findNestedEditables( editablesContainer );
  
  		var editable;
  
  		while ( ( editable = remainingEditables.shift() ) ) {
  			if ( isIterableEditable( editable ) )
  				return { element: editable, remaining: remainingEditables };
  		}
  
  		return null;
  	}
docs: Does a nested editables lookup inside editablesContainer. If remainingEditables is set will lookup inside this array. @param {CKEDITOR.dom.element} editablesContainer @param {CKEDITOR.dom.element[]} [remainingEditables]