Bug 293130 Polishing the Filter extension point
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/dialogs/ResourceFilterGroup.java
.getFilterDescriptors();
		return descriptors[index];
	}
	static IFilterDescriptor getDescriptorByName(String name) {
		IFilterDescriptor[] descriptors = ResourcesPlugin.getWorkspace()
				.getFilterDescriptors();
		for (int i = 0; i < descriptors.length; i++) {
			if (descriptors[i].getName().equals(name))
				return descriptors[i];
		}
		return null;
	}
	private Image fileIcon = null;
	private Image folderIcon = null;
	private Image fileFolderIcon = null;
	private Image includeIcon = null;
	private Image excludeIcon = null;
	private Image inheritableIcon = null;
	FilterTypeUtil() {
		ImageDescriptor descriptor = AbstractUIPlugin
				.imageDescriptorFromPlugin(IDEWorkbenchPlugin.IDE_WORKBENCH,
						"$nl$/icons/full/obj16/fileType_filter.gif"); 
		if (descriptor != null)
			fileIcon = descriptor.createImage();
		descriptor = AbstractUIPlugin.imageDescriptorFromPlugin(
				IDEWorkbenchPlugin.IDE_WORKBENCH,
				"$nl$/icons/full/obj16/folderType_filter.gif"); 
		if (descriptor != null)
			folderIcon = descriptor.createImage();
		descriptor = AbstractUIPlugin.imageDescriptorFromPlugin(