/**
  * This disposes all of the item providers created by this factory.
  * <!-- begin-user-doc -->
  * <!-- end-user-doc -->
  *
  * @generated
  */
 public void dispose() {
   if (bookItemProvider != null) bookItemProvider.dispose();
   if (libraryItemProvider != null) libraryItemProvider.dispose();
   if (writerItemProvider != null) writerItemProvider.dispose();
   if (bookOnTapeItemProvider != null) bookOnTapeItemProvider.dispose();
   if (videoCassetteItemProvider != null) videoCassetteItemProvider.dispose();
   if (borrowerItemProvider != null) borrowerItemProvider.dispose();
   if (personItemProvider != null) personItemProvider.dispose();
   if (employeeItemProvider != null) employeeItemProvider.dispose();
 }