dotnet: Error importing existing Vpc

I’m trying to import an existing Vpc into a dotnet cdk stack using the example here provided by @eladb

            var vpc = VpcNetworkRef.Import(this, "ExternalVpc", new VpcNetworkRefProps
            {
                VpcId = "vpc-ff",
                AvailabilityZones = new AvailabilityZoneProvider(this).AvailabilityZones,
                PrivateSubnetIds = new[] {"subnet-0xx", "subnet-0yy", "subnet-0zz"},
                PublicSubnetIds = new[] {"subnet-aa", "subnet-bb", "subnet-cc"}
            });

However, when I do cdk deploy it says

Unhandled Exception: System.MemberAccessException: Cannot create an instance of Amazon.CDK.AWS.EC2.VpcNetworkRef because it is an abstract class.
   at System.Reflection.RuntimeConstructorInfo.CheckCanCreateInstance(Type declaringType, Boolean isVarArg)
   at System.Reflection.RuntimeConstructorInfo.ThrowNoInvokeException()
   at System.Reflection.RuntimeConstructorInfo.Invoke(BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at Amazon.JSII.Runtime.Services.ReferenceMap.GetOrCreateNativeReference(ByRefValue byRefValue)
   at Amazon.JSII.Runtime.Services.Converters.JsiiToFrameworkConverter.TryConvertClass(IReferenceMap referenceMap, Object value, Object& result)
   at Amazon.JSII.Runtime.Services.Converters.ValueConverter.TryConvertCustomType(IReferenceMap referenceMap, Object value, Boolean isOptional, String fullyQualifiedName, Object& result)
   at Amazon.JSII.Runtime.Services.Converters.ValueConverter.TryConvert(TypeReference typeReference, IReferenceMap referenceMap, Object value, Object& result)
   at Amazon.JSII.Runtime.Deputy.DeputyBase.InvokeMethodCore[T](JsiiMethodAttribute methodAttribute, Object[] arguments, Func`3 beginFunc, Func`3 invokeFunc)
   at Amazon.JSII.Runtime.Deputy.DeputyBase.InvokeStaticMethod[T](Type type, Object[] arguments, String methodName)
   at Stack.AppStack..ctor(App parent, String name, IStackProps props) in E:\Stack\AppStack.cs:line 13

Is this a bug? Or is there another way to import an existing Vpc? (on a side note why is it required to specify all the properties and not just the VpcId?)

[rix0rrr]

Duplicate of https://github.com/awslabs/jsii/issues/223. @costleya, is the fix released yet, and if so, what version of what tool should be installed?

[IndikaUdagedara]

Thanks @costleya. Haven’t tested recently. Please close if it’s working.