Bug 221521 [Markers] New markers API needs to be pared down
We have too much API in some of the new classes and they can be moved to internals
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/MarkerCreationTimeField.java
/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.internal.provisional.views.markers.MarkerField#getValue(org.eclipse.ui.internal.provisional.views.markers.MarkerItem)
	 */
	public String getValue(MarkerItem item) {
		long creationTime = ((MarkerSupportItem) item).getCreationTime();
		if (creationTime < 0)
			return MarkerSupportConstants.EMPTY_STRING;
		return String.valueOf(creationTime);
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.internal.provisional.views.markers.MarkerField#compare(org.eclipse.ui.internal.provisional.views.markers.MarkerItem,
	 *      org.eclipse.ui.internal.provisional.views.markers.MarkerItem)
	 */
	public int compare(MarkerItem item1, MarkerItem item2) {
		return (int) (((MarkerSupportItem) item1).getCreationTime() - ((MarkerSupportItem) item2)
				.getCreationTime());
	}
}