Reading hyper-v pass-through disks using WMI?

How do I read pass-through disks for a guest VM from a Hyper-V using WMI? I'd like to read the pass-through disks that are available to a guest VM using the below mentioned ways:

1. Add a disk to Hyper-V server, take it offline and assign it as a physical disk to VM

2. Configure iSCSI initiator in guest VM to get a disk directly from storage array

3. Use VFC to export a fiber channel lun to guest VM directly.

Thanks/Hem