/**
* Adds an item to a drop down button
*
* @param dropDownName name used for internal map
* @param item item to add to drop down
*/
protected void addDropDownButtonItem(String dropDownName, DropDownButton.DropDownItem item) {
final DropDownButton button = dropDownButtonMap.get(dropDownName);
if (button != null && item != null) {
button.addItem(item);
}
}
