Bug 309563 All packages (o.e.e4.ui.model.workbench.edit) of ItemProviders need to be exported
Before, there is only one ApplicationItemProviderAdapterFactory used by e4 Visual Designer. Now with the new model in multiple packages, we need to export all the corresponding ItemProvider.
bundles/org.eclipse.e4.ui.model.workbench.edit/src/org/eclipse/e4/ui/model/application/ui/basic/provider/PartItemProvider.java
}
	/**
	 * This adds a property descriptor for the Closeable feature.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	protected void addCloseablePropertyDescriptor(Object object) {
		itemPropertyDescriptors.add
			(createItemPropertyDescriptor
				(((ComposeableAdapterFactory)adapterFactory).getRootAdapterFactory(),
				 getResourceLocator(),
				 getString("_UI_Part_closeable_feature"), 
				 getString("_UI_PropertyDescriptor_description", "_UI_Part_closeable_feature", "_UI_Part_type"), 
				 BasicPackageImpl.Literals.PART__CLOSEABLE,
				 true,
				 false,
				 false,
				 ItemPropertyDescriptor.BOOLEAN_VALUE_IMAGE,
				 null,
				 null));
	}
	/**
	 * This specifies how to implement {@link #getChildren} and is used to deduce an appropriate feature for an
	 * {@link org.eclipse.emf.edit.command.AddCommand}, {@link org.eclipse.emf.edit.command.RemoveCommand} or
	 * {@link org.eclipse.emf.edit.command.MoveCommand} in {@link #createCommand}.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */