Use train kubernetes plugin with chef inspec

i have installed inspec version 5.22.55 and installed the train-kubernetes plugin from inspec. dont find any documentation for initializing a profile for train-kubernetes and facing error like method not found for resources like k8s_namespace, k8s_configmaps etc . any documentation or a sample inspec.yml for using train-kubernetes plugin and test compliance on k8s resources

I had no idea what this is, so I looked it up and found: