void setUp() {
    sampleData = new CollectionBenchmarkSampleData(true, random, 0.8, size);
  }

  @Benchmark
  int creation(int reps) {
    int x = 0;
    for (int i = 0; i < reps; i++) {
      x ^= System.identityHashCode(impl.create(sampleData.getValuesInSet()));
    }
    return x;
  }

  }

  @Benchmark
  int iteration(int reps) {
    int x = 0;

    for (int i = 0; i < reps; i++) {
      for (Element y : setToTest) {
        x ^= System.identityHashCode(y);
      }
    }
    return x;
  }

import static com.google.common.util.concurrent.SequentialExecutor.WorkerRunningState.QUEUING;
import static com.google.common.util.concurrent.SequentialExecutor.WorkerRunningState.RUNNING;
import static java.lang.System.identityHashCode;

import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import com.google.common.base.Preconditions;
import com.google.errorprone.annotations.concurrent.GuardedBy;

        return -1;
      } else if (right == null) {
        return 1;
      }
      int leftCode = identityHashCode(left);
      int rightCode = identityHashCode(right);
      if (leftCode != rightCode) {
        return leftCode < rightCode ? -1 : 1;
      }

      // identityHashCode collision (rare, but not as rare as you'd think)
      int result = getUid(left).compareTo(getUid(right));

      collection.add(new Object());
    }
  }

  @Benchmark
  int runOperation(int reps) {
    int result = 0;
    for (int i = 0; i < reps; i++) {
      result += System.identityHashCode(operation.operate(collection.stream()));
    }
    return result;
  }

      }
    }

    @Override
    public int compareTo(Cut<Comparable<?>> o) {
      return (o == this) ? 0 : -1;
    }

    @Override
    public int hashCode() {
      return System.identityHashCode(this);
    }

    @Override
    public String toString() {
      return "-\u221e";
    }

    private Object readResolve() {
      return INSTANCE;
    }

      }
    }

    @Override
    public int compareTo(Cut<Comparable<?>> o) {
      return (o == this) ? 0 : -1;
    }

    @Override
    public int hashCode() {
      return System.identityHashCode(this);
    }

    @Override
    public String toString() {
      return "-\u221e";
    }

    private Object readResolve() {
      return INSTANCE;
    }

    return new SubscriberExceptionContext(bus, event, target, method);
  }

  @Override
  public final int hashCode() {
    return (31 + method.hashCode()) * 31 + System.identityHashCode(target);
  }

  @Override
  public final boolean equals(@CheckForNull Object obj) {
    if (obj instanceof Subscriber) {
      Subscriber that = (Subscriber) obj;

  @Benchmark
  public int collapseFrom(int reps) {
    int result = 0;
    CharMatcher matcher = this.matcher;
    String teststring = this.teststring;
    for (int i = 0; i < reps; i++) {
      result += System.identityHashCode(matcher.collapseFrom(teststring, ' '));
    }
    return result;
  }

  private static String allMatchingChars(BitSet bitSet) {
    final char[] result = new char[bitSet.cardinality()];

  @Benchmark
  public int collapseFrom(int reps) {
    int result = 0;
    CharMatcher matcher = this.matcher;
    String teststring = this.teststring;
    for (int i = 0; i < reps; i++) {
      result += System.identityHashCode(matcher.collapseFrom(teststring, ' '));
    }
    return result;
  }

  private static String allMatchingChars(BitSet bitSet) {
    final char[] result = new char[bitSet.cardinality()];