code: public final void addDependentSoftwareSystems() {
          getModel().getSoftwareSystems().stream()
                  .filter(softwareSystem -> softwareSystem.hasEfferentRelationshipWith(this.getSoftwareSystem()))
                  .forEach(this::add);
      }
docs: /*
  Adds all {@link SoftwareSystem}s that have efferent {@link com.structurizr.model.Relationship}s with the
  {@link SoftwareSystem} of this {@link ContainerView}.