executedRules.add(binder.getDescriptor());
    }

    public Iterable<? extends ModelNode> getDependencies() {
        return dependencies == null ? Collections.<ModelNode>emptyList() : dependencies;
    }

    public Iterable<? extends ModelNode> getDependents() {
        return dependents == null ? Collections.<ModelNode>emptyList() : dependents;
    }

    @Override
    public ModelPath getPath() {

        if (canBeViewedAs(type)) {
            return Cast.uncheckedCast(toView(modelNode, ruleDescriptor, true));
        } else {
            return null;
        }
    }

    @Override
    public <T> ModelView<? extends T> asImmutable(ModelType<T> type, MutableModelNode modelNode, ModelRuleDescriptor ruleDescriptor) {

                registry.atState(tasksPath, ModelNode.State.GraphClosed)
                println "task container node state after graph closing: ${registry.state(tasksPath)}"
            }
        '''

        then:
        succeeds "t1"

        and:
        output.contains "task container node state when task graph ready: ${ModelNode.State.SelfClosed}"