Fighting to adapt an existing aws.ec2.Vpc to awsx.ecs.Cluster. I built the compatible object via

new awsx.ec2.Vpc('...', {vpc})

. (ExistingVpcArgs) but the cluster won't provision because the subnets I've configured arent part of the compatible vpc (awsx) object. Oh I can probably use ExistingVpcIdArgs and pass it my existing privateSubnetIds/publicSubnetIds.