Bug 24024 [Viewers] Error in Javadoc for AbstractTreeViewer::setAutoExpandLevel()
from Javadoc for AbstractTreeViewer::setAutoExpandLevel() : * Sets the auto-expand level. * The value 0 means that the root's children are not visible; * 1 means that the root is expanded so that its children are visible, * but the root's grandchildren are not; and so on. That's off by one. 0 means auto-expand is off. 1 means that roots are not expanded. 2 means that children of the roots are expanded, but not grandchildren; etc. * The value <code>EXPAND_ALL</code> means that all subtrees should be * expanded. The constant should read ALL_LEVELS Note that some other expansion-methods need these comment updates too.
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/AbstractTreeViewer.java
*/
public void collapseAll() {
	collapseToLevel(getRoot(), ALL_LEVELS);
}
/**
 * Collapses the subtree rooted at the given element to the given level.
 *
 * @param element the element
 * @param level non-negative level, or <code>ALL_LEVELS</code> to collapse
 *  all levels of the tree
 */
public void collapseToLevel(Object element, int level) {
	Widget w = findItem(element);
	if (w != null)
		internalCollapseToLevel(w, level);
}
/**
 * Creates all children for the given widget.
 * <p>
 * The default implementation of this framework method assumes 
 * that <code>widget.getData()</code> returns the element corresponding
 * to the node. Note: the node is not visually expanded! You may have to 
 * call <code>parent.setExpanded(true)</code>.
 * </p>
 *
 * @param widget the widget
 */
protected void createChildren(final Widget widget) {
	final Item[] tis = getChildren(widget);
	if (tis != null && tis.length > 0) {