Bug 148993 [Workbench] Wrong Javadoc for IDE.getEditorDescriptor
3.2 and latest 3.3 build The Javadoc of IDE.getEditorDescriptor(...) does not mention that as a very last resort it tries to find the editor descriptor for the default text editor i.e. IDEWorkbenchPlugin.DEFAULT_TEXT_EDITOR_ID (org.eclipse.ui.DefaultTextEditor)
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/ide/IDE.java
if (editorDesc == null) {
			throw new PartInitException(
					IDEWorkbenchMessages.IDE_noFileEditorFound);
		}
		return editorDesc;
	}
	/**
	 * Opens an editor on the file resource of the given marker.
	 * <p>
	 * If this page already has an editor open on the marker resource file that
	 * editor is brought to front; otherwise, a new editor is opened.The cursor
	 * and selection state of the editor are then updated from information
	 * recorded in the marker.
	 * </p>
	 * <p>
	 * If the marker contains an <code>EDITOR_ID_ATTR</code> attribute the
	 * attribute value will be used to determine the editor type to be opened.
	 * If not, the registered editor for the marker resource file will be used.
	 * </p>
	 * 
	 * @param page
	 *            the workbench page to open the editor in
	 * @param marker
	 *            the marker to open
	 * @return an open editor or <code>null</code> not possible
	 * @exception PartInitException
	 *                if the editor could not be initialized
	 * @see #openEditor(org.eclipse.ui.IWorkbenchPage,
	 *      org.eclipse.core.resources.IMarker, boolean)
	 */