Bug 317417 [Model] StackElement should be abstract and interface
StackElement is only a marker for improved containment hierarchies. We should at least make it abstract but also as an interface like WindowElement, ...
bundles/org.eclipse.e4.ui.model.workbench/src/org/eclipse/e4/ui/model/application/ui/basic/impl/BasicPackageImpl.java
*/
	public EClass getTrimBar() {
		return trimBarEClass;
	}
	/**
	 * Returns the meta object for class '{@link org.eclipse.e4.ui.model.application.ui.basic.MStackElement <em>Stack Element</em>}'.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @return the meta object for class '<em>Stack Element</em>'.
	 * @see org.eclipse.e4.ui.model.application.ui.basic.MStackElement
	 * @generated
	 */
	public EClass getStackElement() {
		return stackElementEClass;
	}
	/**
	 * Returns the factory that creates the instances of the model.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @return the factory that creates the instances of the model.
	 * @generated
	 */
	public MBasicFactory getBasicFactory() {
		return (MBasicFactory)getEFactoryInstance();
	}
	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */