long[] array = {(long) 0, (long) 1, (long) 2};
    List<Long> list = Longs.asList(array);
    long[] newArray = Longs.toArray(list);

    // Make sure it returned a copy
    list.set(0, (long) 4);
    assertThat(newArray).isEqualTo(new long[] {(long) 0, (long) 1, (long) 2});
    newArray[1] = (long) 5;
    assertThat((long) list.get(1)).isEqualTo((long) 1);
  }

    float[] array = {(float) 0, (float) 1, (float) 2};
    List<Float> list = Floats.asList(array);
    float[] newArray = Floats.toArray(list);

    // Make sure it returned a copy
    list.set(0, (float) 4);
    assertThat(newArray).isEqualTo(new float[] {(float) 0, (float) 1, (float) 2});
    newArray[1] = (float) 5;
    assertThat((float) list.get(1)).isEqualTo((float) 1);
  }

    int[] array = {(int) 0, (int) 1, (int) 2};
    List<Integer> list = Ints.asList(array);
    int[] newArray = Ints.toArray(list);

    // Make sure it returned a copy
    list.set(0, (int) 4);
    assertThat(newArray).isEqualTo(new int[] {(int) 0, (int) 1, (int) 2});
    newArray[1] = (int) 5;
    assertThat((int) list.get(1)).isEqualTo((int) 1);
  }

    short[] array = {(short) 0, (short) 1, (short) 2};
    List<Short> list = Shorts.asList(array);
    short[] newArray = Shorts.toArray(list);

    // Make sure it returned a copy
    list.set(0, (short) 4);
    assertThat(newArray).isEqualTo(new short[] {(short) 0, (short) 1, (short) 2});
    newArray[1] = (short) 5;
    assertThat((short) list.get(1)).isEqualTo((short) 1);
  }

   * about arrays for now, as they're a mess. (We previously discussed this in the review of
   * ObjectArrays, which is the main caller of this method.)
   */
  static <T extends @Nullable Object> T[] newArray(T[] reference, int length) {
    T[] empty = reference.length == 0 ? reference : Arrays.copyOf(reference, 0);
    return Arrays.copyOf(empty, length);
  }

    char[] array = {(char) 0, (char) 1, (char) 2};
    List<Character> list = Chars.asList(array);
    char[] newArray = Chars.toArray(list);

    // Make sure it returned a copy
    list.set(0, (char) 4);
    assertThat(newArray).isEqualTo(new char[] {(char) 0, (char) 1, (char) 2});
    newArray[1] = (char) 5;
    assertThat((char) list.get(1)).isEqualTo((char) 1);
  }

    float[] array = {(float) 0, (float) 1, (float) 2};
    List<Float> list = Floats.asList(array);
    float[] newArray = Floats.toArray(list);

    // Make sure it returned a copy
    list.set(0, (float) 4);
    assertThat(newArray).isEqualTo(new float[] {(float) 0, (float) 1, (float) 2});
    newArray[1] = (float) 5;
    assertThat((float) list.get(1)).isEqualTo((float) 1);
  }

    short[] array = {(short) 0, (short) 1, (short) 2};
    List<Short> list = Shorts.asList(array);
    short[] newArray = Shorts.toArray(list);

    // Make sure it returned a copy
    list.set(0, (short) 4);
    assertThat(newArray).isEqualTo(new short[] {(short) 0, (short) 1, (short) 2});
    newArray[1] = (short) 5;
    assertThat((short) list.get(1)).isEqualTo((short) 1);
  }

    int[] array = {(int) 0, (int) 1, (int) 2};
    List<Integer> list = Ints.asList(array);
    int[] newArray = Ints.toArray(list);

    // Make sure it returned a copy
    list.set(0, (int) 4);
    assertThat(newArray).isEqualTo(new int[] {(int) 0, (int) 1, (int) 2});
    newArray[1] = (int) 5;
    assertThat((int) list.get(1)).isEqualTo((int) 1);
  }

    char[] array = {(char) 0, (char) 1, (char) 2};
    List<Character> list = Chars.asList(array);
    char[] newArray = Chars.toArray(list);

    // Make sure it returned a copy
    list.set(0, (char) 4);
    assertThat(newArray).isEqualTo(new char[] {(char) 0, (char) 1, (char) 2});
    newArray[1] = (char) 5;
    assertThat((char) list.get(1)).isEqualTo((char) 1);
  }