Good afternoon, I am trying to create a NEW custom VM Extension, but this seems to only try and reference a previously created artifact. Is there a way to do what I want and I've just made an error or...? #Create Custom VM Extension extension = compute.VirtualMachineExtension( "extensiontest", resource_group_name=resource_group.name, auto_upgrade_minor_version=False, enable_automatic_upgrade=False, type="CustomScriptExtension", type_handler_version="2.0", force_update_tag=False, publisher="KBC", settings={ "commandToExecute" : "mkdir c:\eric" }, vm_name=vm_TestVM.name ) error: Code="ArtifactNotFound" Message="The VM extension with publisher 'KBC' and type 'CustomScriptExtension' could not be found."