docs: public SystemContextView createSystemContextView(SoftwareSystem softwareSystem, String key, String description) {
          assertThatTheSoftwareSystemIsNotNull(softwareSystem);
          assertThatTheViewKeyIsSpecifiedAndUnique(key);
  
          SystemContextView view = new SystemContextView(softwareSystem, key, description);
          view.setViewSet(this);
          systemContextViews.add(view);
          return view;
      }