*/
fun <T : Any, C : PolymorphicDomainObjectContainer<T>, U : T> C.registering(
    type: KClass<U>,
    action: U.() -> Unit
): RegisteringDomainObjectDelegateProviderWithTypeAndAction<out C, U> =
    RegisteringDomainObjectDelegateProviderWithTypeAndAction.of(this, type, action)


/**
 * Registers an element and provides a delegate with the resulting [NamedDomainObjectProvider].
 */

)


/**
 * Registers a task of the given type that gets configured with the given action and provides a delegate with the resulting [TaskProvider].
 */
operator fun <U : Task> RegisteringDomainObjectDelegateProviderWithTypeAndAction<out TaskContainer, U>.provideDelegate(
    receiver: Any?,
    property: KProperty<*>
) = ExistingDomainObjectDelegate.of(
    delegateProvider.register(property.name, type.java, action)
)