Bug 273012 [Forms] NPE in FormPage.setActive(...)
bundles/org.eclipse.ui.forms/src/org/eclipse/ui/forms/editor/FormPage.java
*/
	protected void createFormContent(IManagedForm managedForm) {
	}
	/**
	 * Returns the form page control.
	 * 
	 * @return managed form's control
	 */
	public Control getPartControl() {
		return mform != null ? mform.getForm() : null;
	}
	/**
	 * Disposes the managed form.
	 */
	public void dispose() {
		if (mform != null)
			mform.dispose();
	}
	/**
	 * Returns the unique identifier that can be used to reference this page.
	 * 
	 * @return the unique page identifier
	 */
	public String getId() {
		return id;
	}
	/**
	 * Returns <code>null</code>- form page has no title image. Subclasses
	 * may override.
	 *