||The pci slot number of the virtual device.
The pci slot number assignment should generally be left to the system.
If assigned a value, and the value is invalid or duplicated, it will
automatically be reassigned. This will not cause an error.
Generally, the PCI slot numbers should never be specified in an
Reconfigure operation, and only in a CreateVM operation if i) they
are specified for all devices, and ii) the numbers have been
determined by looking at an existing VM configuration of similar
hardware version. In other words, when the virtual hardware configuration