public EnumSet<E> get() {
    return value;
  }
@SuppressWarnings("unchecked")
  @Test
  public void testSerializeAndDeserializeEmpty() throws IOException {

    boolean gotException = false;
    try {
      new EnumSetWritable<TestEnumSet>(emptyFlag);
    } catch (RuntimeException e) {
      gotException = true;
    }

    assertTrue(
        "Instantiation of empty EnumSetWritable with no element type class "
        + "provided should throw exception.",
        gotException);

    EnumSetWritable<TestEnumSet> emptyFlagWritable = 
        new EnumSetWritable<TestEnumSet>(emptyFlag, TestEnumSet.class);
    DataOutputBuffer out = new DataOutputBuffer();
    ObjectWritable.writeObject(out, emptyFlagWritable, emptyFlagWritable
        .getClass(), null);
    DataInputBuffer in = new DataInputBuffer();
    in.reset(out.getData(), out.getLength());
    EnumSet<TestEnumSet> read = ((EnumSetWritable<TestEnumSet>) ObjectWritable
        .readObject(in, null)).get();
    assertEquals(read, emptyFlag);
  }