Bug 72615 [Viewers] Need and ITableFontProvider
We released an ITabelColorProvider for M2 - we should have a corresponding ITableFontProvider
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/StructuredViewer.java
*            indicate unknown
	 */
	public void update(Object element, String[] properties) {
		Assert.isNotNull(element);
		Widget item = findItem(element);
		if (item == null)
			return;
		boolean needsRefilter = false;
		if (properties != null) {
			for (int i = 0; i < properties.length; ++i) {
				needsRefilter = needsRefilter(element, properties[i]);
				if (needsRefilter)
					break;
			}
		}
		if (needsRefilter) {
			refresh();
			return;
		}
		boolean needsUpdate;
		if (properties == null) {
			needsUpdate = true;
		} else {
			needsUpdate = false;
			IBaseLabelProvider labelProvider = getLabelProvider();
			for (int i = 0; i < properties.length; ++i) {
				needsUpdate = labelProvider.isLabelProperty(element, properties[i]);
				if (needsUpdate)
					break;
			}