public boolean contains(AclAction action) {
    return mActions.get(action.ordinal());
  }
@Test
  public void contains() {
    AclActions actions = new AclActions();
    assertFalse(actions.contains(AclAction.READ));
    assertFalse(actions.contains(AclAction.WRITE));
    assertFalse(actions.contains(AclAction.EXECUTE));

    actions.add(AclAction.READ);
    assertTrue(actions.contains(AclAction.READ));
    actions.add(AclAction.WRITE);
    assertTrue(actions.contains(AclAction.WRITE));
    actions.add(AclAction.EXECUTE);
    assertTrue(actions.contains(AclAction.EXECUTE));
  }