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
* <code>activate == true</code> the editor will be activated.
	 * <p>
	 * 
	 * @param page
	 *            the page in which the editor will be opened
	 * @param input
	 *            the editor input
	 * @param editorId
	 *            the id of the editor extension to use
	 * @param activate
	 *            if <code>true</code> the editor will be activated
	 * @return an open editor or <code>null</code> if an external editor was
	 *         opened
	 * @exception PartInitException
	 *                if the editor could not be initialized
	 * @see org.eclipse.ui.IWorkbenchPage#openEditor(IEditorInput, String,
	 *      boolean)
	 */
	public static IEditorPart openEditor(IWorkbenchPage page, IFile input,
			String editorId, boolean activate) throws PartInitException {
		
		if (page == null) {
			throw new IllegalArgumentException();
		}
		
		return page.openEditor(new FileEditorInput(input), editorId, activate);
	}
	/**
	 * Returns an editor descriptor appropriate for opening the given file
	 * resource.