private static InstanceProducer BuildInstanceProducerForConcreteUnregisteredType(
Type concreteType, Registration registration)
{
var producer = new InstanceProducer(concreteType, registration);
producer.EnsureTypeWillBeExplicitlyVerified();
// Flag that this producer is resolved by the container or using unregistered type resolution.
producer.IsContainerAutoRegistered = true;
return(producer);
}