abstract NamedDomainObjectContainer<T> getContainer()

    @Override
    protected Map<String, Closure> getMutatingMethods() {
        return super.getMutatingMethods() + [
            "create(String)": { container.create("b") },
            "create(String, Action)": { container.create("b", Actions.doNothing()) },

        then:
        ex = thrown(Throwable)
        assertDoesNotAllowMethod(ex, methodUnderTest)

        where:
        mutatingMethods << getMutatingMethods()
    }

    protected Map<String, Closure> getMutatingMethods() {
        // TODO:
        // "addLater(Provider)"    | { it.addLater(Providers.of(b)) }
        // "addAllLater(Provider)" | { it.addAllLater(Providers.collectionOf(b)) }