}

    @Override
    public int hashCode() {
      return standardHashCode();
    }

    @Override
    public boolean setCount(T element, int oldCount, int newCount) {
      return standardSetCount(element, oldCount, newCount);
    }

    @Override
    public int setCount(T element, int count) {
      return standardSetCount(element, count);
    }

    @Override

   *     was indeed modified, unless {@code oldCount == newCount}.
   * @throws IllegalArgumentException if {@code oldCount} or {@code newCount} is negative
   * @throws NullPointerException if {@code element} is null and the implementation does not permit
   *     null elements. Note that if {@code oldCount} and {@code newCount} are both zero, the

    return delegate().setCount(element, count);
  }

  @CanIgnoreReturnValue
  @Override
  public boolean setCount(@ParametricNullness E element, int oldCount, int newCount) {
    return delegate().setCount(element, oldCount, newCount);
  }

  /**
   * A sensible definition of {@link #contains} in terms of {@link #count}. If you override {@link

      K k = (K) key;
      int oldCount = 0;
      Iterator<V> itr = collection.iterator();
      while (itr.hasNext()) {
        V v = itr.next();
        if (satisfies(k, v)) {
          oldCount++;
          if (oldCount <= occurrences) {
            itr.remove();
          }
        }
      }
      return oldCount;
    }

    @Override

      Multiset<E> self, @ParametricNullness E element, int oldCount, int newCount) {
    checkNonnegative(oldCount, "oldCount");
    checkNonnegative(newCount, "newCount");

    if (self.count(element) == oldCount) {
      self.setCount(element, newCount);
      return true;
    } else {
      return false;
    }
  }

  static <E extends @Nullable Object> Iterator<E> elementIterator(

      Multiset<E> self, @ParametricNullness E element, int oldCount, int newCount) {
    checkNonnegative(oldCount, "oldCount");
    checkNonnegative(newCount, "newCount");

    if (self.count(element) == oldCount) {
      self.setCount(element, newCount);
      return true;
    } else {
      return false;
    }
  }

  static <E extends @Nullable Object> Iterator<E> elementIterator(

    return setCountImpl(this, element, count);
  }

  @CanIgnoreReturnValue
  @Override
  public boolean setCount(@ParametricNullness E element, int oldCount, int newCount) {
    return setCountImpl(this, element, oldCount, newCount);
  }

  // Bulk Operations

  /**
   * {@inheritDoc}
   *
   * <p>This implementation is highly efficient when {@code elementsToAdd} is itself a {@link

    }
  }

  @CollectionFeature.Require(SUPPORTS_REMOVE)
  public void testRemove_occurrences_0() {
    int oldCount = getMultiset().count(e0());
    assertEquals(
        "multiset.remove(E, 0) didn't return the old count",
        oldCount,
        getMultiset().remove(e0(), 0));
  }

  @CollectionFeature.Require(SUPPORTS_REMOVE)
  public void testRemove_occurrences_negative() {

    }
  }

  @CollectionFeature.Require(SUPPORTS_REMOVE)
  public void testRemove_occurrences_0() {
    int oldCount = getMultiset().count(e0());
    assertEquals(
        "multiset.remove(E, 0) didn't return the old count",
        oldCount,
        getMultiset().remove(e0(), 0));
  }

  @CollectionFeature.Require(SUPPORTS_REMOVE)
  public void testRemove_occurrences_negative() {

    return setCountImpl(this, element, count);
  }

  @CanIgnoreReturnValue
  @Override
  public boolean setCount(@ParametricNullness E element, int oldCount, int newCount) {
    return setCountImpl(this, element, oldCount, newCount);
  }

  // Bulk Operations

  /**
   * {@inheritDoc}
   *
   * <p>This implementation is highly efficient when {@code elementsToAdd} is itself a {@link