protected void populatePopup(){
  clearAll();
  createVisibilityActions();
  addVisibilityActionItems();
  addAdditionalActionItems();
}

protected void populatePopup ( ) { clearAll ( ) ; createVisibilityActions ( ) ; addVisibilityActionItems ( ) ; addAdditionalActionItems ( ) ; }
populates the popup from scratch . if applicable , creates and adds column visibility actions . always adds additional actions .
