key - Property in wmi

List of namespaces with key property

NameSpace	n of Classes
ROOT\CIMV2	3
ROOT\CIMV2\ms_409	3
ROOT\Microsoft\Windows\DesiredStateConfiguration	1
ROOT\Microsoft\Windows\Wdac	1
ROOT\WebAdministration	2
ROOT\WebAdministration\MS_409	2
ROOT\WMI	5
ROOT\WMI\ms_409	2