private <P> void validateProperty(
     ModelSchema<P> propertySchema,
     ManagedProperty<P> property,
     NodeInitializerRegistry nodeInitializerRegistry) {
   if (propertySchema instanceof ManagedImplSchema) {
     if (!property.isWritable()) {
       if (isCollectionOfManagedTypes(propertySchema)) {
         CollectionSchema<P, ?> propertyCollectionsSchema =
             (CollectionSchema<P, ?>) propertySchema;
         ModelType<?> elementType = propertyCollectionsSchema.getElementType();
         nodeInitializerRegistry.ensureHasInitializer(
             forProperty(elementType, property, bindings.getPublicSchema().getType()));
       }
       if (property.isDeclaredAsHavingUnmanagedType()) {
         throw new UnmanagedPropertyMissingSetterException(property.getName());
       }
     }
   } else if (!shouldHaveANodeInitializer(property, propertySchema)
       && !property.isWritable()
       && !isNamePropertyOfANamedType(property)) {
     throw new ReadonlyImmutableManagedPropertyException(
         bindings.getPublicSchema().getType(), property.getName(), property.getType());
   }
 }
  private <P> void addPropertyLink(
      MutableModelNode modelNode,
      ManagedProperty<P> property,
      ModelSchemaStore schemaStore,
      NodeInitializerRegistry nodeInitializerRegistry) {
    ModelType<P> propertyType = property.getType();
    ModelSchema<P> propertySchema = schemaStore.getSchema(propertyType);
    ModelType<T> publicType = bindings.getPublicSchema().getType();

    validateProperty(propertySchema, property, nodeInitializerRegistry);

    ModelPath childPath = modelNode.getPath().child(property.getName());
    if (propertySchema instanceof ManagedImplSchema) {
      if (!property.isWritable()) {
        ModelRegistrations.Builder builder =
            managedRegistrationBuilder(childPath, property, nodeInitializerRegistry, publicType);
        addLink(modelNode, builder, property.isInternal());
      } else {
        if (propertySchema instanceof ScalarCollectionSchema) {
          ModelRegistrations.Builder builder =
              managedRegistrationBuilder(childPath, property, nodeInitializerRegistry, publicType);
          addLink(modelNode, builder, property.isInternal());
        } else {
          modelNode.addReference(property.getName(), propertyType, modelNode.getDescriptor());
        }
      }
    } else {
      ModelRegistrations.Builder registrationBuilder;
      if (shouldHaveANodeInitializer(property, propertySchema)) {
        registrationBuilder =
            managedRegistrationBuilder(childPath, property, nodeInitializerRegistry, publicType);
      } else {
        registrationBuilder = ModelRegistrations.of(childPath);
      }
      registrationBuilder.withProjection(new UnmanagedModelProjection<P>(propertyType));
      addLink(modelNode, registrationBuilder, property.isInternal());
    }
  }