assertArgumentNotNull("array", array);

        final int[] newArray = (int[]) Array.newInstance(int.class, array.length + 1);
        System.arraycopy(array, 0, newArray, 0, array.length);
        newArray[array.length] = value;
        return newArray;
    }

    /**
     * Returns a new array with the specified long value appended to the end of the long array.
     *

        boolean langFirst = "lang".equals(keys[0]);
        assertTrue("lang should be first or sorted normally", langFirst || Arrays.asList(keys).contains("lang"));

        assertTrue(Arrays.asList(keys).contains("apple"));
        assertTrue(Arrays.asList(keys).contains("banana"));
        assertTrue(Arrays.asList(keys).contains("zebra"));
    }

    public void test_entrySet_with_lang_key_ordering() {

        });
    }

    /**
     * Returns the array of supported web protocols.
     *
     * @return array of web protocol strings with colon suffix (e.g., "http:", "https:")
     */
    public String[] getWebProtocols() {
        return webProtocols;
    }

    /**
     * Returns the array of supported file protocols.
     *
     * @return array of file protocol strings with colon suffix (e.g., "file:", "ftp:")

  @BeforeExperiment
  void setUp() throws Exception {
    Random r = new Random();
    ba1 = new byte[length];
    r.nextBytes(ba1);
    ba2 = Arrays.copyOf(ba1, ba1.length);
    // Differ at the last element
    ba3 = Arrays.copyOf(ba1, ba1.length);
    ba4 = Arrays.copyOf(ba1, ba1.length);
    ba3[ba1.length - 1] = (byte) 43;
    ba4[ba1.length - 1] = (byte) 42;

    Integer[] starting = Arrays.copyOf(array1, array1.length);
    Integer[] array2 = Arrays.copyOf(array1, array1.length);
    Object[] reference = list.toArray(array1);

    Object[] target = ObjectArrays.toArrayImpl(list, array2);

    assertEquals(reference.getClass(), target.getClass());
    assertTrue(Arrays.equals(reference, target));

    assertThat(Bytes.concat(ARRAY1)).isEqualTo(ARRAY1);
    assertThat(Bytes.concat(ARRAY1)).isNotSameInstanceAs(ARRAY1);
    assertThat(Bytes.concat(EMPTY, ARRAY1, EMPTY)).isEqualTo(ARRAY1);
    assertThat(Bytes.concat(ARRAY1, ARRAY1, ARRAY1))
        .isEqualTo(new byte[] {(byte) 1, (byte) 1, (byte) 1});
    assertThat(Bytes.concat(ARRAY1, ARRAY234))

    assertThat(Doubles.concat(ARRAY1)).isEqualTo(ARRAY1);
    assertThat(Doubles.concat(ARRAY1)).isNotSameInstanceAs(ARRAY1);
    assertThat(Doubles.concat(EMPTY, ARRAY1, EMPTY)).isEqualTo(ARRAY1);
    assertThat(Doubles.concat(ARRAY1, ARRAY1, ARRAY1)).isEqualTo(new double[] {1.0, 1.0, 1.0});
    assertThat(Doubles.concat(ARRAY1, ARRAY234)).isEqualTo(new double[] {1.0, 2.0, 3.0, 4.0});
  }

    assertThat(Ints.concat(ARRAY1)).isEqualTo(ARRAY1);
    assertThat(Ints.concat(ARRAY1)).isNotSameInstanceAs(ARRAY1);
    assertThat(Ints.concat(EMPTY, ARRAY1, EMPTY)).isEqualTo(ARRAY1);
    assertThat(Ints.concat(ARRAY1, ARRAY1, ARRAY1))
        .isEqualTo(new int[] {(int) 1, (int) 1, (int) 1});
    assertThat(Ints.concat(ARRAY1, ARRAY234))

  @JvmStatic
  fun repeat(
    c: Char,
    count: Int,
  ): String {
    val array = CharArray(count)
    Arrays.fill(array, c)
    return String(array)
  }

  /**
   * Okio buffers are internally implemented as a linked list of arrays. Usually this implementation
   * detail is invisible to the caller, but subtle use of certain APIs may depend on these internal
   * structures.

    assertThat(Chars.concat(ARRAY1)).isEqualTo(ARRAY1);
    assertThat(Chars.concat(ARRAY1)).isNotSameInstanceAs(ARRAY1);
    assertThat(Chars.concat(EMPTY, ARRAY1, EMPTY)).isEqualTo(ARRAY1);
    assertThat(Chars.concat(ARRAY1, ARRAY1, ARRAY1))
        .isEqualTo(new char[] {(char) 1, (char) 1, (char) 1});
    assertThat(Chars.concat(ARRAY1, ARRAY234))