Missing find PCIdevices in finder.go

[geetikabatra]

Is your feature request related to a problem? Please describe.
I am trying to access PCI devices(specifically GPU), something similar to finder.Network.
I also see that in object/virtual_device_list.go, only 4 kinds of devices are mentioned i.e cdrom, disk, ethernet, floppy . There is no such thing as GPU device or NIC. Need a way to find a GPU device?

Describe the solution you'd like
A method that helps easier access to PCI devices such as GPU and NIC's.

Describe alternatives you've considered
n/a

Additional context
Add any other context or screenshots about the feature request here.

[github-actions]

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[dougm]

Finder only applies to inventory objects, but we have the VirtualDeviceList type for finding VM devices.
In the case of finding a specific VM NIC, you can use the Finder to get the network object itself:

govmomi/object/example_test.go

Lines 501 to 502 in a416445

	// finder.Network returns an object.NetworkReference
	net, err := finder.Network(ctx, "DC0_NSX0")

Then EthernetCardBackingInfo to get a device backing for the network:

govmomi/object/example_test.go

Lines 507 to 509 in a416445

	// EthernetCardBackingInfo creates the backing for any network type:
	// "Network", "DistributedVirtualPortgroup" or "OpaqueNetwork"
	backing, err := net.EthernetCardBackingInfo(ctx)

Then VirtualDeviceList.SelectByBackingInfo to get the NIC device:

govmomi/object/example_test.go

Line 530 in a416445

match := list.SelectByBackingInfo(backing) // VM NIC with DC0_NSX0 backing

As for GPU, see the example added in #2772