* @param tooltip The tooltip to use to find the button to return.
* @return The toolbar button.
* @throws WidgetNotFoundException Thrown if the widget was not found matching the given tooltip.
*/
public SWTBotToolbarDropDownButton toolbarDropDownButton(String tooltip) throws WidgetNotFoundException {
SWTBotToolbarButton abstractButton = toolbarButton(tooltip);
if (abstractButton instanceof SWTBotToolbarDropDownButton)
return (SWTBotToolbarDropDownButton) abstractButton;
throw new WidgetNotFoundException("Unable to find toolitem with the given tooltip '" + tooltip + "'"); //$NON-NLS-1$ //$NON-NLS-2$
}