byte[] statsByteArray = stats.toByteArray();

      // Round trip to byte array and back
      assertThat(Stats.fromByteArray(statsByteArray)).isEqualTo(stats);
    }
  }

  public void testFromByteArray_withNullInputThrowsNullPointerException() {
    assertThrows(NullPointerException.class, () -> Stats.fromByteArray(null));
  }

  public void testFromByteArray_withEmptyArrayInputThrowsIllegalArgumentException() {

    }
  }

  @GwtIncompatible // Chars.fromByteArray
  public void testFromByteArray() {
    assertThat(Chars.fromByteArray(new byte[] {0x23, 0x45, (byte) 0xDC})).isEqualTo('\u2345');
    assertThat(Chars.fromByteArray(new byte[] {(byte) 0xFE, (byte) 0xDC})).isEqualTo('\uFEDC');
  }

  @GwtIncompatible // Chars.fromByteArray
  public void testFromByteArrayFails() {
    assertThrows(

  public void testFromByteArray() {
    assertThat(Ints.fromByteArray(new byte[] {0x12, 0x13, 0x14, 0x15, 0x33})).isEqualTo(0x12131415);
    assertThat(Ints.fromByteArray(new byte[] {(byte) 0xFF, (byte) 0xEE, (byte) 0xDD, (byte) 0xCC}))
        .isEqualTo(0xFFEEDDCC);
  }

  public void testFromByteArrayFails() {
    assertThrows(
        IllegalArgumentException.class, () -> Ints.fromByteArray(new byte[Ints.BYTES - 1]));
  }

        Longs.toByteArray(0xFFEEDDCCBBAA9988L));
  }

  public void testFromByteArray() {
    assertThat(
            Longs.fromByteArray(new byte[] {0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x33}))
        .isEqualTo(0x1213141516171819L);
    assertThat(
            Longs.fromByteArray(
                new byte[] {
                  (byte) 0xFF, (byte) 0xEE, (byte) 0xDD, (byte) 0xCC,

  @GwtIncompatible // doesn't work
  public static char fromByteArray(byte[] bytes) {
    checkArgument(bytes.length >= BYTES, "array too small: %s < %s", bytes.length, BYTES);
    return fromBytes(bytes[0], bytes[1]);
  }

  /**
   * Returns the {@code char} value whose byte representation is the given 2 bytes, in big-endian
   * order; equivalent to {@code Chars.fromByteArray(new byte[] {b1, b2})}.
   *
   * @since 7.0
   */

  @GwtIncompatible // doesn't work
  public static short fromByteArray(byte[] bytes) {
    checkArgument(bytes.length >= BYTES, "array too small: %s < %s", bytes.length, BYTES);
    return fromBytes(bytes[0], bytes[1]);
  }

  /**
   * Returns the {@code short} value whose byte representation is the given 2 bytes, in big-endian
   * order; equivalent to {@code Shorts.fromByteArray(new byte[] {b1, b2})}.
   *
   * @since 7.0
   */

  @GwtIncompatible // doesn't work
  public static short fromByteArray(byte[] bytes) {
    checkArgument(bytes.length >= BYTES, "array too small: %s < %s", bytes.length, BYTES);
    return fromBytes(bytes[0], bytes[1]);
  }

  /**
   * Returns the {@code short} value whose byte representation is the given 2 bytes, in big-endian
   * order; equivalent to {@code Shorts.fromByteArray(new byte[] {b1, b2})}.
   *
   * @since 7.0
   */

  @GwtIncompatible // doesn't work
  public static char fromByteArray(byte[] bytes) {
    checkArgument(bytes.length >= BYTES, "array too small: %s < %s", bytes.length, BYTES);
    return fromBytes(bytes[0], bytes[1]);
  }

  /**
   * Returns the {@code char} value whose byte representation is the given 2 bytes, in big-endian
   * order; equivalent to {@code Chars.fromByteArray(new byte[] {b1, b2})}.
   *
   * @since 7.0
   */

   */
  public static int fromByteArray(byte[] bytes) {
    checkArgument(bytes.length >= BYTES, "array too small: %s < %s", bytes.length, BYTES);
    return fromBytes(bytes[0], bytes[1], bytes[2], bytes[3]);
  }

  /**
   * Returns the {@code int} value whose byte representation is the given 4 bytes, in big-endian
   * order; equivalent to {@code Ints.fromByteArray(new byte[] {b1, b2, b3, b4})}.
   *

   * flexibility at little cost in readability.
   *
   * @throws IllegalArgumentException if {@code bytes} has fewer than 8 elements
   */
  public static long fromByteArray(byte[] bytes) {
    checkArgument(bytes.length >= BYTES, "array too small: %s < %s", bytes.length, BYTES);
    return fromBytes(
        bytes[0], bytes[1], bytes[2], bytes[3], bytes[4], bytes[5], bytes[6], bytes[7]);
  }