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
* expanded.
	 * </p>
	 * 
	 * @param level
	 *           non-negative level, or <code>ALL_LEVELS</code> to expand all
	 *           levels of the tree
	 */
	public void setAutoExpandLevel(int level) {
		expandToLevel = level;
	}
	/**
	 * The <code>AbstractTreeViewer</code> implementation of this method
	 * checks to ensure that the content provider is an <code>ITreeContentProvider</code>.
	 */
	public void setContentProvider(IContentProvider provider) {
		Assert.isTrue(provider instanceof ITreeContentProvider);
		super.setContentProvider(provider);
	}
	/**
	 * Sets the expand state of the given item.
	 * 
	 * @param item
	 *           the item
	 * @param expand
	 *           the expand state of the item
	 */
	protected abstract void setExpanded(Item item, boolean expand);
	/**
	 * Sets which nodes are expanded in this viewer's tree. The given list
	 * contains the elements that are to be expanded; all other nodes are to be