The VM.InventoryPlacementSpec structure contains information used to place a virtual machine in the vCenter inventory.
Virtual machine folder into which the virtual machine should be placed. This field is currently required. In the future, if this field is unset, the system will attempt to choose a suitable folder for the virtual machine; if a folder cannot be chosen, the virtual machine creation operation will fail. When clients pass a value of this structure as a parameter, the field must be an identifier for the resource type: Folder. When operations return a value of this structure as a result, the field will be an identifier for the resource type: Folder.