abstract public long[] getBlockListAsLongs();
@Test
  public void testUc() {
    BlockListAsLongs blocks = checkReport(
      new ReplicaBeingWritten(b1, null, null, null));
    assertArrayEquals(
        new long[] {
            0, 1,
            -1, -1, -1,
            1, 11, 111, ReplicaState.RBW.getValue() }, 
        blocks.getBlockListAsLongs());
  }