return copyOf(elements);
    }

    @GwtIncompatible @J2ktIncompatible private static final long serialVersionUID = 0;
  }

  @J2ktIncompatible // serialization
  private void readObject(ObjectInputStream stream) throws InvalidObjectException {
    throw new InvalidObjectException("Use SerializedForm");
  }

  @Override
  @J2ktIncompatible
  @GwtIncompatible
    Object writeReplace() {

    @J2ktIncompatible
    @Override
    Object writeReplace() {
      return new KeysSerializedForm(ImmutableMultimap.this);
    }

    @GwtIncompatible
    @J2ktIncompatible
    private void readObject(ObjectInputStream stream) throws InvalidObjectException {
      throw new InvalidObjectException("Use KeysSerializedForm");
    }
  }

  @GwtIncompatible
  @J2ktIncompatible

    }
  }

  @Override
  @J2ktIncompatible // serialization
  Object writeReplace() {
    return new SerializedForm<E>(this);
  }

  @J2ktIncompatible // java.io.ObjectInputStream
  private void readObject(ObjectInputStream stream) throws InvalidObjectException {
    throw new InvalidObjectException("Use SerializedForm");
  }

  /**

 * operations will work correctly. To allow concurrent update operations, wrap your multimap with a
 * call to {@link Multimaps#synchronizedMultimap}.
 *
 * <p>For serialization to work, the subclass must specify explicit {@code readObject} and {@code
 * writeObject} methods.
 *
 * @author Jared Levy
 * @author Louis Wasserman
 */
@GwtCompatible
@SuppressWarnings("WrongCommentType") // false positive

    @J2ktIncompatible
    @Override
    Object writeReplace() {
      return new KeysSerializedForm(ImmutableMultimap.this);
    }

    @GwtIncompatible
    @J2ktIncompatible
    private void readObject(ObjectInputStream stream) throws InvalidObjectException {
      throw new InvalidObjectException("Use KeysSerializedForm");
    }
  }

  @GwtIncompatible
  @J2ktIncompatible

      oos.writeObject(o);
      oos.flush();
      oos.close();
      ObjectInputStream ois = new ObjectInputStream(new ByteArrayInputStream(bos.toByteArray()));
      T clone = (T) ois.readObject();
      assertThat(clone.getClass()).isEqualTo(o.getClass());
      return clone;
    } catch (Throwable t) {
      threadUnexpectedException(t);
      return null;
    }
  }

  }

  @Override
  @J2ktIncompatible
    Object writeReplace() {
    return new SerializedForm(toArray());
  }

  @J2ktIncompatible
    private void readObject(ObjectInputStream stream) throws InvalidObjectException {
    throw new InvalidObjectException("Use SerializedForm");
  }

  /**

      p = Double.MIN_VALUE;
    }
    return (long) (-n * Math.log(p) / SQUARED_LOG_TWO);
  }

    private Object writeReplace() {
    return new SerialForm<T>(this);
  }

    private void readObject(ObjectInputStream stream) throws InvalidObjectException {
    throw new InvalidObjectException("Use SerializedForm");
  }

  private static final class SerialForm<T extends @Nullable Object> implements Serializable {

    }
  }

  @Override
  @J2ktIncompatible // serialization
  Object writeReplace() {
    return new SerializedForm<E>(this);
  }

  @J2ktIncompatible // java.io.ObjectInputStream
  private void readObject(ObjectInputStream stream) throws InvalidObjectException {
    throw new InvalidObjectException("Use SerializedForm");
  }

  /**

  }

  @Override
  @J2ktIncompatible // serialization
  Object writeReplace() {
    return new SerializedForm<>(this);
  }

  @J2ktIncompatible // java.io.ObjectInputStream
  private void readObject(ObjectInputStream stream) throws InvalidObjectException {
    throw new InvalidObjectException("Use SerializedForm");
  }

  // This class is never actually serialized directly, but we have to make the