import java.lang.annotation.Inherited;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.util.Collections;
import java.util.Set;

/**
 * Optional features of classes derived from {@link Multiset}.
 *
 * @author Louis Wasserman
 */
@SuppressWarnings("rawtypes") // maybe avoidable if we rework the whole package?
@GwtCompatible
public enum MultisetFeature implements Feature<Multiset> {

    tester.testAllPublicStaticMethods(MoreObjects.class);
    tester.testAllPublicInstanceMethods(MoreObjects.toStringHelper(new TestClass()));
  }

  /** Test class for testing formatting of inner classes. */
  private static class TestClass {}

  @GwtIncompatible // java.lang.reflect
  @CheckForNull
  private static Object getJLA() {
    try {
      /*
       * We load sun.misc.* classes using reflection since Android doesn't support these classes and
       * would result in compilation failure if we directly refer to these classes.
       */
      Class<?> sharedSecrets = Class.forName(SHARED_SECRETS_CLASSNAME, false, null);

  @GwtIncompatible // java.lang.reflect
  @CheckForNull
  private static Object getJLA() {
    try {
      /*
       * We load sun.misc.* classes using reflection since Android doesn't support these classes and
       * would result in compilation failure if we directly refer to these classes.
       */
      Class<?> sharedSecrets = Class.forName(SHARED_SECRETS_CLASSNAME, false, null);

    assertEquals("FooBar{}", toTest);
  }

  @GwtIncompatible // Class names are obfuscated in GWT
  public void testToStringHelper_localInnerClass() {
    // Local inner classes have names ending like "Outer.$1Inner"
    class LocalInnerClass {}
    String toTest = MoreObjects.toStringHelper(new LocalInnerClass()).toString();
    assertEquals("LocalInnerClass{}", toTest);
  }

import java.util.concurrent.atomic.AtomicReference;
import junit.framework.AssertionFailedError;
import junit.framework.TestCase;

/**
 * Base class for JSR166 Junit TCK tests. Defines some constants, utility methods and classes, as
 * well as a simple framework for helping to make sure that assertions failing in generated threads
 * cause the associated test that generated them to itself fail (which JUnit does not otherwise

  }

  public void testIn_handlesNullPointerException() {
    class CollectionThatThrowsNPE<T> extends ArrayList<T> {
      @J2ktIncompatible // Kotlin doesn't support companions for inner classes
      private static final long serialVersionUID = 1L;

      @Override
      public boolean contains(@Nullable Object element) {
        Preconditions.checkNotNull(element);
        return super.contains(element);

   * add(Object)} call will throw a {@code ClassCastException}.
   *
   * <p>The type specification is {@code <E extends Comparable>}, instead of the more specific
   * {@code <E extends Comparable<? super E>>}, to support classes defined without generics.
   */
  @SuppressWarnings("rawtypes") // https://github.com/google/guava/issues/989
  public static <E extends Comparable> TreeMultiset<E> create() {
    return new TreeMultiset<>(Ordering.natural());

   * natural ordering. The sorted sets use {@link Ordering#natural()} as the comparator. This method
   * provides more type-safety than {@link #builder}, as it can be called only for classes that
   * implement {@link Comparable}.
   */
  public static <E extends Comparable<?>> Builder<E> naturalOrder() {
    return new Builder<>(Ordering.natural());
  }

  /**

  Object writeReplace() {
    return super.writeReplace();
  }

  // This class is never actually serialized directly, but we have to make the
  // warning go away (and suppressing would suppress for all nested classes too)
  @J2ktIncompatible // serialization
  private static final long serialVersionUID = 0;