vCAC VCO Plugin 5.2 Inventory Host

I'm attempting to retrieve the the Host from the vCAC VCO Plugin 5.2 Inventory.  I have been successful retrieving other parts of the inventory with the code below, but I can not find the Host. Does anybody have the correct search string?

var vCACHostMachine = Server.findAllForType("vCAC:HostMachine");