return """def enableFeaturePreviewSafe(String feature) {
                     try {
                        enableFeaturePreview(feature)
                        println "Enabled feature preview " + feature
                     } catch(Exception ignored) {
                        println "Failed to enable feature preview " + feature
                     }
                }

        for (FeatureInfo feature : spec.getFeatures()) {
            if (!feature.getFeatureMethod().getReflection().isAnnotationPresent(IntegrationTestTimeout.class)) {
                visitFeatureAnnotation(timeout, feature);
            }
        }
    }

    @Override
    public void visitFeatureAnnotation(IntegrationTestTimeout timeout, FeatureInfo feature) {
        runIfEnabled(timeout, () ->

		actual, ok := all[name]
		if !ok {
			t.Errorf("expected feature %q not found", name)
			continue
		}

		if actual != expected {
			t.Errorf("expected feature %q spec %#v, got spec %#v", name, expected, actual)
		}
	}

	var r interface{}
	func() {
		defer func() {
			r = recover()
		}()
		_ = a.Add(map[clientfeatures.Feature]clientfeatures.FeatureSpec{
			"FeatureAlpha": {PreRelease: "foobar"},
		})

limitations under the License.
*/

package persistentvolume

import (
	"context"

	"github.com/google/go-cmp/cmp"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	utilfeature "k8s.io/apiserver/pkg/util/feature"
	featuregatetesting "k8s.io/component-base/featuregate/testing"
	apitesting "k8s.io/kubernetes/pkg/api/testing"
	api "k8s.io/kubernetes/pkg/apis/core"
	"k8s.io/kubernetes/pkg/features"
	"reflect"
	"testing"
	"time"

    }

    def "can enable feature preview for #feature"() {
        when:
        settings.enableFeaturePreview(feature.name())
        then:
        1 * previews.enable(feature)
        where:
        feature << FeaturePreviewsActivationFixture.activeFeatures()
    }

    def 'fails when enabling an unknown feature'() {
        when:

@GwtCompatible
public enum SetFeature implements Feature<Set> {
  GENERAL_PURPOSE(CollectionFeature.GENERAL_PURPOSE);

  private final Set<Feature<? super Set>> implied;

  SetFeature(Feature<? super Set>... implied) {
    this.implied = Helpers.copyToSet(implied);
  }

  @Override
  public Set<Feature<? super Set>> getImpliedFeatures() {
    return implied;
  }

@GwtCompatible
public enum SetFeature implements Feature<Set> {
  GENERAL_PURPOSE(CollectionFeature.GENERAL_PURPOSE);

  private final Set<Feature<? super Set>> implied;

  SetFeature(Feature<? super Set>... implied) {
    this.implied = Helpers.copyToSet(implied);
  }

  @Override
  public Set<Feature<? super Set>> getImpliedFeatures() {
    return implied;
  }

  @CanIgnoreReturnValue
  public B withFeatures(Iterable<? extends Feature<?>> features) {
    for (Feature<?> feature : features) {
      this.features.add(feature);
    }
    return self();
  }

  public Set<Feature<?>> getFeatures() {
    return Collections.unmodifiableSet(features);
  }

  // Name

  private @Nullable String name;

  /** Configures this builder produce a TestSuite with the given name. */

    def "can use enable_external_dtd_load feature on extension"() {
        given:
        buildFile """
            checkstyle {
                enableExternalDtdLoad = true
            }
        """

        when:
        fails 'checkstyleMain'

        then:
        assertFailedWithCheckstyleVerificationErrors()
    }

    def "can use enable_external_dtd_load feature on task"() {
        given:

  REMOVE_OPERATIONS(CollectionFeature.REMOVE_OPERATIONS, SUPPORTS_REMOVE_WITH_INDEX);

  private final Set<Feature<? super List>> implied;

  ListFeature(Feature<? super List>... implied) {
    this.implied = Helpers.copyToSet(implied);
  }

  @Override
  public Set<Feature<? super List>> getImpliedFeatures() {
    return implied;
  }

  @Retention(RetentionPolicy.RUNTIME)
  @Inherited