int result = BigIntegerMath.log2(x, HALF_UP);
      BigInteger x2 = x.pow(2);
      // x^2 < 2^(2 * result + 1), or else we would have rounded up
      assertThat(ZERO.setBit(2 * result + 1)).isGreaterThan(x2);
      // x^2 >= 2^(2 * result - 1), or else we would have rounded down
      assertTrue(result == 0 || ZERO.setBit(2 * result - 1).compareTo(x2) <= 0);
    }
  }

  public void testLog2HalfDown() {

    private final ImmutableIntArray parent;

    private AsList(ImmutableIntArray parent) {
      this.parent = parent;
    }

    // inherit: isEmpty, containsAll, toArray x2, iterator, listIterator, stream, forEach, mutations

    @Override
    public int size() {
      return parent.length();
    }

    @Override
    public Integer get(int index) {

    private final ImmutableLongArray parent;

    private AsList(ImmutableLongArray parent) {
      this.parent = parent;
    }

    // inherit: isEmpty, containsAll, toArray x2, iterator, listIterator, stream, forEach, mutations

    @Override
    public int size() {
      return parent.length();
    }

    @Override
    public Long get(int index) {

- Events:
    Type     Reason   Age                 From               Message
    ----     ------   ----                ----               -------
    Warning  Failed   7m11s (x2 over 7m33s) kubelet          spec.containers{nginx}: Failed to pull image "nginx": failed to pull and unpack image... ([#133627](https://github.com/kubernetes/kubernetes/pull/133627), [@itzPranshul](https://github.com/itzPranshul)) [SIG CLI]