Bug 44393 [Viewers] + shown in front of methods even if local types filter is on (different behaviour in outliner, members view and package explorer)
Test pass M4 - load JUnit - add an anonymous type to Assert#Assert - enable local type filter in Outliner observe: there is a plus in front of Assert which goes away when clicking on it. This might be JFace related but I would prefer that the plus is removed when the filter is switched on. - close Outliner - open Outliner observe: there isn't any plus sign in front of Assert - open Java Browsing perspective - enable local type filter in members view - select Assert class in Types view observe: the constructor Assert has a plus sign in front which goes away when clicking on it. - switch to another class - switch back to Assert observe: the constructor again has a plus sign in front. This is really annoying. The members view should at least behave like the outliner. - switch to package explorer - expand Assert - toggle local type filter observe: plus sign is added and removed correctly.
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/AbstractTreeViewer.java
*           the widget
	 * @param level
	 *           non-negative level, or <code>ALL_LEVELS</code> to collapse
	 *           all levels of the tree
	 */
	protected void internalCollapseToLevel(Widget widget, int level) {
		if (level == ALL_LEVELS || level > 0) {
			if (widget instanceof Item)
				setExpanded((Item) widget, false);
			if (level == ALL_LEVELS || level > 1) {
				Item[] children = getChildren(widget);
				if (children != null) {
					int nextLevel =
						(level == ALL_LEVELS ? ALL_LEVELS : level - 1);
					for (int i = 0; i < children.length; i++)
						internalCollapseToLevel(children[i], nextLevel);
				}
			}
		}
	}
	/**
	 * Recursively collects all expanded elements from the given widget.
	 * 
	 * @param result
	 *           a list (element type: <code>Object</code>) into which to
	 *           collect the elements
	 * @param widget
	 *           the widget
	 */
	private void internalCollectExpanded(List result, Widget widget) {