Bug 315281 update copyrights for 3.6
bundles/org.eclipse.core.databinding.property/src/org/eclipse/core/databinding/property/set/SetProperty.java
* @param set
	 *            the new set
	 * @since 1.3
	 * @noreference This method is not intended to be referenced by clients.
	 */
	protected void doSetSet(Object source, Set set) {
		doUpdateSet(source, Diffs.computeSetDiff(doGetSet(source), set));
	}
	/**
	 * @since 1.3
	 */
	public final void updateSet(Object source, SetDiff diff) {
		if (source != null && !diff.isEmpty()) {
			doUpdateSet(source, diff);
		}
	}
	/**
	 * Updates the property on the source with the specified change.
	 * 
	 * @param source
	 *            the property source
	 * @param diff
	 *            a diff describing the change
	 * @since 1.3
	 * @noreference This method is not intended to be referenced by clients.
	 */
	protected void doUpdateSet(Object source, SetDiff diff) {
		IObservableSet observable = observe(source);
		try {
			diff.applyTo(observable);