kustomize does not support multiple "x-kubernetes-group-version-kind" in OpenAPI

[ciis0]

kustomize/kyaml/openapi/openapi.go

Lines 210 to 212 in 0537b59

	if !ok || len(exts) != 1 {
	continue
	}

This for example breaks using the default OpenShift OpenAPI JSON which for example contains two GVKs for DeploymentConfig:

{
    "com.github.openshift.api.apps.v1.DeploymentConfig": {
      "properties": {
        "apiVersion": {
          "description": "APIVersion defines the versioned schema of this representation of an object. Servers should convert recognized schemas to the latest internal value, and may reject unrecognized values. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources",
          "type": "string"
        },
        "kind": {
          "description": "Kind is a string value representing the REST resource this object represents. Servers may infer this from the endpoint the client submits requests to. Cannot be updated. In CamelCase. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds",
          "type": "string"
        },
        "metadata": {
          "$ref": "#/definitions/io.k8s.apimachinery.pkg.apis.meta.v1.ObjectMeta"
        },
        "spec": {
          "$ref": "#/definitions/com.github.openshift.api.apps.v1.DeploymentConfigSpec",
          "description": "Spec represents a desired deployment state and how to deploy to it."
        },
        "status": {
          "$ref": "#/definitions/com.github.openshift.api.apps.v1.DeploymentConfigStatus",
          "description": "Status represents the current deployment state."
        }
      },
      "required": [
        "spec"
      ],
      "type": "object",
      "x-kubernetes-group-version-kind": [
        {
          "group": "",
          "kind": "DeploymentConfig",
          "version": "v1"
        },
        {
          "group": "apps.openshift.io",
          "kind": "DeploymentConfig",
          "version": "v1"
        }
      ]
    }

[KnVerey]

/triage accepted
/assign @natasha41575

[ciis0]

thank you for the fast fix!