How to get Virtual Server Type using powershell iControlSnapIn?

I am using powershell iControlSnapIn to fetch the details of the Virtual Servers. I am trying to get type value. It always returns RESOURCE_TYPE_POOL. But when look these up in the browser, I see values like Standard, Performance (Layer 4). I would like my powershell script also return the same values. Could anyone tell me as how I would do this?