for (String reject : rejects) {
            this.rejectedVersions.add(nullToEmpty(reject));
        }
        this.branch = branch;
    }

    private void updateVersions(@Nullable String preferredVersion, @Nullable String requiredVersion, @Nullable String strictVersion) {
        this.preferredVersion = nullToEmpty(preferredVersion);

  "groups": [
    {
      "name": "apiregistration.k8s.io",
      "preferredVersion": {
        "groupVersion": "apiregistration.k8s.io/v1",
        "version": "v1"
      },
      "versions": [
        {
          "groupVersion": "apiregistration.k8s.io/v1",
          "version": "v1"
        }
      ]
    },
    {
      "name": "apps",
      "preferredVersion": {
        "groupVersion": "apps/v1",
        "version": "v1"

@CompileStatic
class DependencyConstraintSpec {
    String group
    String module
    String version
    String preferredVersion
    String strictVersion
    List<String> rejects
    String reason
    Map<String, ?> attributes

    DependencyConstraintSpec(String g, String m, String v, String preferredVersion, String strictVersion, List<String> r, String desc, Map<String, ?> attrs) {
        group = g
        module = m

    String version
    String preferredVersion
    String strictVersion
    List<String> rejects
    List<ExcludeSpec> exclusions = []
    boolean endorseStrictVersions
    String reason
    Map<String, Object> attributes
    List<CapabilitySpec> requestedCapabilities = []
    ArtifactSelectorSpec artifactSelector

                                } else if (d.version) {
                                    requires d.version
                                } else if (d.preferredVersion) {
                                    prefers d.preferredVersion
                                }
                                rejects d.rejects
                            }
                            if (d.endorseStrictVersions) {

	// kubeadm generated version
	CurrentVersion string `json:"currentVersion"`

	// PreferredVersion is the component config version that is currently preferred by kubeadm for use.
	// NOTE: As of today, this is the only version supported by kubeadm.
	PreferredVersion string `json:"preferredVersion"`

	// ManualUpgradeRequired indicates if users need to manually upgrade their component config versions. This happens if

	// kubeadm generated version
	CurrentVersion string

	// PreferredVersion is the component config version that is currently preferred by kubeadm for use.
	// NOTE: As of today, this is the only version supported by kubeadm.
	PreferredVersion string

	// ManualUpgradeRequired indicates if users need to manually upgrade their component config versions. This happens if

{
  "apiVersion": "v1",
  "kind": "APIGroup",
  "name": "storagemigration.k8s.io",
  "preferredVersion": {
    "groupVersion": "storagemigration.k8s.io/v1alpha1",
    "version": "v1alpha1"
  },
  "versions": [
    {
      "groupVersion": "storagemigration.k8s.io/v1alpha1",
      "version": "v1alpha1"
    }
  ]

apiVersion: v1
kind: APIGroup
name: nameValue
preferredVersion:
  groupVersion: groupVersionValue
  version: versionValue
serverAddressByClientCIDRs:
- clientCIDR: clientCIDRValue
  serverAddress: serverAddressValue
versions:
- groupVersion: groupVersionValue

{
  "kind": "APIGroup",
  "apiVersion": "v1",
  "name": "nameValue",
  "versions": [
    {
      "groupVersion": "groupVersionValue",
      "version": "versionValue"
    }
  ],
  "preferredVersion": {
    "groupVersion": "groupVersionValue",
    "version": "versionValue"
  },
  "serverAddressByClientCIDRs": [
    {
      "clientCIDR": "clientCIDRValue",
      "serverAddress": "serverAddressValue"
    }
  ]