Bug 315281 update copyrights for 3.6
bundles/org.eclipse.ui.navigator/src/org/eclipse/ui/internal/navigator/extensions/NavigatorContentDescriptorManager.java
* 
	 * @param descriptorId
	 *            The unique id of a particular descriptor
	 * @return The name (value of the 'name' attribute) of the given descriptor
	 */
	public String getText(String descriptorId) {
		INavigatorContentDescriptor descriptor = getContentDescriptor(descriptorId);
		if (descriptor != null) {
			return descriptor.getName();
		}
		return descriptorId;
	}
	/**
	 * 
	 * @param descriptorId
	 *            The unique id of a particular descriptor
	 * @return The image (corresponding to the value of the 'icon' attribute) of
	 *         the given descriptor
	 */
	public Image getImage(String descriptorId) {
		return retrieveAndStoreImage(descriptorId);
	}
	protected Image retrieveAndStoreImage(String descriptorId) {
		NavigatorContentDescriptor contentDescriptor = getContentDescriptor(descriptorId);
		Image image = null;
		if (contentDescriptor != null) {
			String icon = contentDescriptor.getIcon();
			if (icon != null) {
				image = getImageRegistry().get(icon);
				if (image == null || image.isDisposed()) {