Bug 305703 [Viewers][CommonNavigator] remembered contributions can leak when using filters
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/StructuredViewer.java
* Set the font.
		 * @param font 
		 */
		public void setFont(Font font) {
			this.font = font;
		}
		/**
		 * Set the foreground color.
		 * @param foreground
		 */
		public void setForeground(Color foreground) {
			this.foreground = foreground;
		}
	
		
	}
	/**
	 * The safe runnable used to update an item.
	 */
	class UpdateItemSafeRunnable extends SafeRunnable {
		private Widget widget;
		private Object element;
		private boolean fullMap;
		UpdateItemSafeRunnable(Widget widget, Object element, boolean fullMap) {
			this.widget = widget;
			this.element = element;
			this.fullMap = fullMap;
		}
		public void run() {
			doUpdateItem(widget, element, fullMap);