Bug 261031 [CommonNavigator] IPipelinedContentProvider getParent() returning the suggested parent is not ignored
"Link with Editor" neglects to expand the tree in Project Explorer for not C/C++ file types after reopening eclipse. My case: 1. Create a new subfolder in C/C++ project. Place there a new file with non-C/C++ extension like hello.txt. Open the file with text editor. 2. Quit and reenter eclipse. It should open hello.txt in editor at that point. 3. In Project Explorer, push button "Link with Editor". I expect the tree to be expanded and the cursor placed on hello.txt at that point. As a side note, the button is actually named "Link open editors with content in the Navigator" (???). Well, that appears to be absolutely true and if you open Navigator it is linked. But what about linking in Project Explorer?
bundles/org.eclipse.ui.navigator/src/org/eclipse/ui/navigator/IPipelinedTreeContentProvider.java
* <p>
	 * <b>Clients should not call any of the add, remove, refresh, or update
	 * methods on the viewer from this method or any code invoked by the
	 * implementation of this method.</b>
	 * </p>
	 * 
	 * @param anAddModification
	 *            The shape modification which contains the current suggested
	 *            parent and children. Clients may modify this parameter
	 *            directly and return it as the new shape modification.
	 * @return The new shape modification to use. Clients should <b>never</b>
	 *         return <b>null</b> from this method.
	 */
	PipelinedShapeModification interceptAdd(PipelinedShapeModification anAddModification);
	/**
	 * Intercept attempts to remove elements directly from the viewer.
	 * 
	 * <p>
	 * For content extensions that reshape the structure of children in a
	 * viewer, their overridden extensions may sometimes use optimized refreshes
	 * to remove elements to the tree. These attempts must be intercepted and
	 * mapped to the correct set of model elements in the overriding extension.
	 * Clients may add, remove, or modify elements in the given set of removed
	 * children. Clients should return a set for downstream extensions to
	 * massage further.
	 * </p>
	 * <p>
	 * The parent will be <b>null</b> for remove modifications.
	 * <p>
	 * Clients should never create their own pipeline shape modifications, but