How to use

assertThatTheContainerIsNotNull

method

in

com.structurizr.view.ViewSet

/**
 * Creates a component view, where the scope of the view is the specified container.
 *
 * @param container         the Container object representing the scope of the view
 * @param key               the key for the view (must be unique)
 * @param description       a description of the view
 * @return                  a ContainerView object
 * @throws                  IllegalArgumentException if the container is null or the key is not unique
 */
public ComponentView createComponentView(Container container, String key, String description) {
  assertThatTheContainerIsNotNull(container);
  assertThatTheViewKeyIsSpecifiedAndUnique(key);
  ComponentView view = new ComponentView(container, key, description);
  view.setViewSet(this);
  componentViews.add(view);
  return view;
}

/**
 * Creates a dynamic view, where the scope is the specified container. The following
 * elements can be added to the resulting view:
 *
 * <ul>
 * <li>People</li>
 * <li>Software systems</li>
 * <li>Containers with the same parent software system as the specified container</li>
 * <li>Components within the specified container</li>
 * </ul>
 *
 * @param container         the Container object representing the scope of the view
 * @param key               the key for the view (must be unique)
 * @param description       a description of the view
 * @return                  a DynamicView object
 * @throws                  IllegalArgumentException if the container is null or the key is not unique
 */
public DynamicView createDynamicView(Container container, String key, String description) {
  assertThatTheContainerIsNotNull(container);
  assertThatTheViewKeyIsSpecifiedAndUnique(key);
  DynamicView view = new DynamicView(container, key, description);
  view.setViewSet(this);
  dynamicViews.add(view);
  return view;
}