Bug 181061 [Viewers] JFace viewers performance issues in 3.3
A number of the JFace performance tests are red since I20060926-0800.
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/ColumnViewer.java
*/
	public Object[] getColumnProperties() {
		return columnProperties;
	}
	/**
	 * Returns whether there is an active cell editor.
	 * 
	 * <p>
	 * Since 3.3, an alternative API is available, see
	 * {@link ViewerColumn#setEditingSupport(EditingSupport)} for a more
	 * flexible way of editing values in a column viewer.
	 * </p>
	 * 
	 * @return <code>true</code> if there is an active cell editor, and
	 *         <code>false</code> otherwise
	 * @since 3.1 (in subclasses, added in 3.3 to abstract class)
	 * @see ViewerColumn#setEditingSupport(EditingSupport)
	 * @see EditingSupport
	 */
	public boolean isCellEditorActive() {
		if (viewerEditor != null) {
			return viewerEditor.isCellEditorActive();
		}
		return false;
	}
	/**
	 * Sets the cell editors of this column viewer. If editing is not supported
	 * by this viewer the call simply has no effect.
	 * 
	 * <p>