code: function() {
  			var el = this.getCommonAncestor();
  
  			if ( el && el.type == CKEDITOR.NODE_TEXT )
  				el = el.getParent();
  
  			return !!( el && el.data( 'cke-hidden-sel' ) );
  		}
docs: Checks whether selection is placed in hidden element.
  
  This method is to be used to verify whether fake selection
  (see {@link #fake}) is still hidden.
  
  **Note:** this method should be executed on real selection - e.g.:
  
  editor.getSelection( true ).isHidden();
  
  @returns {Boolean}