/**
   * This returns the property descriptors for the adapted class.
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   *
   * @generated
   */
  @Override
  public List<IItemPropertyDescriptor> getPropertyDescriptors(Object object) {
    if (itemPropertyDescriptors == null) {
      super.getPropertyDescriptors(object);

      addComponentsPropertyDescriptor(object);
    }
    return itemPropertyDescriptors;
  }
  /**
   * This returns the property descriptors for the adapted class.
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   *
   * @generated
   */
  @Override
  public List<IItemPropertyDescriptor> getPropertyDescriptors(Object object) {
    if (itemPropertyDescriptors == null) {
      super.getPropertyDescriptors(object);

      addAnnotatedModelElementsPropertyDescriptor(object);
    }
    return itemPropertyDescriptors;
  }
  /**
   * This returns the property descriptors for the adapted class.
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   *
   * @generated
   */
  @Override
  public List<IItemPropertyDescriptor> getPropertyDescriptors(Object object) {
    if (itemPropertyDescriptors == null) {
      super.getPropertyDescriptors(object);

      addInitiatingActorPropertyDescriptor(object);
      addParticipatingActorsPropertyDescriptor(object);
      addRealizedUserTaskPropertyDescriptor(object);
      addPreconditionPropertyDescriptor(object);
      addUseCaseStepsPropertyDescriptor(object);
      addPostconditionPropertyDescriptor(object);
      addScenariosPropertyDescriptor(object);
      addFunctionalRequirementsPropertyDescriptor(object);
      addNonFunctionalRequirementsPropertyDescriptor(object);
      addIdentifiedClassesPropertyDescriptor(object);
      addIncludedUseCasesPropertyDescriptor(object);
      addExtendedUseCasesPropertyDescriptor(object);
      addSystemFunctionsPropertyDescriptor(object);
    }
    return itemPropertyDescriptors;
  }