Bug 176784 always-excluding-first and always-excluding-last in item properties pop up error[00]
Details: always-excluding-first and always-excluding-last in item properties pop up error Step: 1.New a report and add a label 2.Select the label and switch properties tab. 3.Select the section and set the page break as always-excluding-first or always-excluding-last. actual result: Pop up an error excepted result: If these selection are not supported, and please remove them. If these selection are supported, it can be set to the item.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/views/attributes/providers/ChoiceSetFactory.java
*/
	public static IChoiceSet getStructChoiceSet( String structName,
			String property )
	{
		IPropertyDefn propertyDefn = DEUtil.getMetaDataDictionary( )
				.getStructure( structName )
				.findProperty( property );
		return propertyDefn.getChoices( );
	}
	/**
	 * Gets all displayNames that a given ChoiceSet instance contained.
	 * 
	 * @param choiceSet
	 *            The ChoiceSet instance.
	 * @return A String array contains displayNames.
	 */
	public static String[] getDisplayNamefromChoiceSet( IChoiceSet choiceSet )
	{
		return getDisplayNamefromChoiceSet( choiceSet, null );
	}
	/**
	 * Gets all displayNames that a given ChoiceSet instance contained.
	 * 
	 * @param choiceSet
	 *            The ChoiceSet instance.
	 * @param comparator
	 *            The sort comparator.
	 * @return A String array contains displayNames.
	 */
	public static String[] getDisplayNamefromChoiceSet( IChoiceSet choiceSet,