https://learn.microsoft.com/en-us/windows/win32/api/wbemcli/nf-wbemcli-iunsecuredapartment-createobjectstub
IUnsecuredApartment::CreateObjectStub (wbemcli.h) - Win32 apps | Microsoft Learn
The CreateObjectStub method creates an object forwarder sink to assist in receiving asynchronous calls from Windows Management.
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