Bug 190061 [Metadata] Update @since tags for new API
Patch to follow
bundles/org.eclipse.jface.databinding/src/org/eclipse/jface/databinding/viewers/ObservableListContentProvider.java
}
		setInput((IObservableList) newInput);
	}
	/**
	 * @param list
	 */
	private void setInput(IObservableList list) {
		if (list == null) {
			list = new WritableList(SWTObservables.getRealm(Display.getDefault()));
		}
		if (observableList != null) {
			observableList.removeListChangeListener(listener);
		}
		
		knownElements.clear();
		observableList = list;
		
		knownElements.addAll(list);
		observableList.addListChangeListener(listener);
	}
	/**
	 * @return the set of elements known to this content provider. Label providers may track
	 * this set if they need to be notified about additions before the viewer sees the added
	 * element, and notified about removals after the element was removed from the viewer.
	 */
	public IObservableSet getKnownElements() {
		return knownElements;
	}
}