Bug 299536 API refers to non-API type UIResourceFilterDescription
I20100112 CreateGroupOperation and CreateFolderOperation have constructors that require a UIResourceFilterDescription[]. However this is a non-API type, so clients can't reference it without using internals. Either the constructor should be removed or something like UIResourceFilterDescription needs to be promoted to API. Also, shouldn't CreateFolderOperation be renamed CreateVirtualFolderOperation?
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/dialogs/ResourceFilterGroup.java
static String ID = "id"; 
	static String TARGET = "target"; 
	static String MODE = "mode"; 
	static String ARGUMENTS = "arguments"; 
	static String INHERITABLE = "inheritable"; 
	static String[] columnNames = new String[] { MODE, ARGUMENTS, INHERITABLE };
	static String[] getModes() {
		return new String[] {
				NLS.bind(IDEWorkbenchMessages.ResourceFilterPage_includeOnly,
						null),
				NLS.bind(IDEWorkbenchMessages.ResourceFilterPage_excludeAll,
						null) };
	}
	public static void setValue(FilterCopy filter, String property, Object value) {
		if (property.equals(FilterTypeUtil.ID)) {
			IFilterMatcherDescriptor descriptor;
			if (value instanceof Integer) {