custom-kube-scheduler/kubernetes/pkg/controller/.import-restrictions

{
  "Rules": [
    {
      "SelectorRegexp": "k8s[.]io/kubernetes/pkg/client/unversioned$",
      "ForbiddenPrefixes": [
        "k8s.io/kubernetes/pkg/client/unversioned"
      ]
    },
    {
      "SelectorRegexp": "k8s[.]io/kubernetes/pkg/client/unversioned/testclient$",
      "ForbiddenPrefixes": [
        "k8s.io/kubernetes/pkg/client/unversioned/testclient"
      ]
    }
  ]
}