import java.util.Set;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

/**
 * Abstract base class for testing implementations of {@link Graph} interface. Graph instances
 * created for testing should have Integer node and String edge objects.
 *
 * <p>Test cases that should be handled similarly in any graph implementation are included in this

 * @since 21.0
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
public final class CollectorTester<
    T extends @Nullable Object, A extends @Nullable Object, R extends @Nullable Object> {
  /**
   * Creates a {@code CollectorTester} for the specified {@code Collector}. The result of the {@code
   * Collector} will be compared to the expected value using {@link Object#equals}.
   */

		md.VariableLabels, extraLabels,
	)
}

// NewCounterMD - creates a new counter metric descriptor.
func NewCounterMD(name MetricName, help string, labels ...string) MetricDescriptor {
	return MetricDescriptor{
		Name:           name,
		Type:           CounterMT,
		Help:           help,
		VariableLabels: labels,
	}
}

// NewGaugeMD - creates a new gauge metric descriptor.

	if err != nil {
		return errFnHealFromAPIErr(h.ctx, err)
	}

	// Heal latest buckets first.
	sort.Slice(buckets, func(i, j int) bool {
		return buckets[i].Created.After(buckets[j].Created)
	})

	for _, bucket := range buckets {
		if err = h.healBucket(objAPI, bucket.Name, false); err != nil {
			return err
		}
	}

	return nil
}

   * the event source has already been closed or canceled.
   */
  fun cancel()

  fun interface Factory {
    /**
     * Creates a new event source and immediately returns it. Creating an event source initiates an
     * asynchronous process to connect the socket. Once that succeeds or fails, `listener` will be

/** Never actually created; instead delegates to JdkBackedImmutableMultiset. */
@ElementTypesAreNonnullByDefault
class RegularImmutableMultiset<E> extends ImmutableMultiset<E> {
  static final ImmutableMultiset<Object> EMPTY =
      JdkBackedImmutableMultiset.create(ImmutableList.of());

  RegularImmutableMultiset() {}

  static <E> ImmutableMultiset<E> create(Collection<? extends Entry<? extends E>> entries) {

        this.roleHint = roleHint;
    }

    public String getRole() {
        return role;
    }

    public String getRoleHint() {
        return roleHint;
    }

    /**
     * Creates a shallow copy of this requirement.
     */
    @Override
    public Requirement clone() {
        try {
            return (Requirement) super.clone();
        } catch (CloneNotSupportedException e) {

  /**
   * Creates an empty {@code TreeMultimap} ordered by the natural ordering of its keys and values.
   */
  @SuppressWarnings("rawtypes") // https://github.com/google/guava/issues/989
  public static <K extends Comparable, V extends Comparable> TreeMultimap<K, V> create() {
    return new TreeMultimap<>(Ordering.natural(), Ordering.natural());
  }

  /**

 * @param <C> the invoker context type
 */
public interface ContainerCapsuleFactory<
        O extends Options, R extends InvokerRequest<O>, C extends LookupInvoker.LookupInvokerContext<O, R, C>> {
    /**
     * Creates container capsule.
     */
    @Nonnull
    ContainerCapsule createContainerCapsule(C context) throws InvokerException;

   * {@link Math#max(float, float)}.
   *
   * @param array a <i>nonempty</i> array of {@code float} values
   * @return the value present in {@code array} that is greater than or equal to every other value
   *     in the array
   * @throws IllegalArgumentException if {@code array} is empty
   */
  @GwtIncompatible(