int bytesWritten = notifyChange.writeSetupWireFormat(dst, startIndex);

        // Check that bytes before startIndex are unchanged
        for (int i = 0; i < startIndex; i++) {
            assertEquals((byte) (i & 0xFF), dst[i]);
        }

        // Check that bytes after written area are unchanged
        for (int i = startIndex + bytesWritten; i < dst.length; i++) {
            assertEquals((byte) (i & 0xFF), dst[i]);

    protected abstract List<Double> create(Double[] elements);

    @Override
    public Double[] createArray(int length) {
      return new Double[length];
    }

    /** Returns the original element list, unchanged. */
    @Override
    public List<Double> order(List<Double> insertionOrder) {
      return insertionOrder;
    }
  }

  public static class SampleDoubles extends SampleElements<Double> {

   */
  E[] createArray(int length);

  /**
   * Returns the iteration ordering of elements, given the order in which they were added to the
   * container. This method may return the original list unchanged, the original list modified in
   * place, or a different list.
   *
   * <p>If the order is non-deterministic, as with {@link java.util.HashSet}, this method can return

    return new String[length];
  }

  @Override
  public final String[] createValueArray(int length) {
    return new String[length];
  }

  /** Returns the original element list, unchanged. */
  @Override
  public Iterable<Entry<String, String>> order(List<Entry<String, String>> insertionOrder) {
    return insertionOrder;
  }

        // Modify the original array
        Arrays.fill(originalPassword, 'X');

        // Authenticator's password should be unchanged
        assertEquals("IndependentPass123!", auth.getPassword());
        assertArrayEquals(passwordCopy, auth.getPasswordAsCharArray());

        // Get password as char array and modify it

        // Check that bytes before startIndex are unchanged
        for (int i = 0; i < startIndex; i++) {
            assertEquals((byte) (i & 0xFF), dst[i]);
        }

        // Check that bytes after written area are unchanged
        for (int i = startIndex + bytesWritten; i < dst.length; i++) {
            assertEquals((byte) (i & 0xFF), dst[i]);

        byte[] retrievedKey = key.getKey();

        // Modify the retrieved key
        retrievedKey[0] = (byte) 0xFF;

        // Original key should remain unchanged
        assertEquals(0x01, key.getKey()[0]);
    }

    @Test
    @DisplayName("Should create readable string representation")
    void testToString() {

   *
   * <p>In this case, {@code collection} was not modified as a result of the {@code add()} call, and
   * the test will fail because the number of occurrences of {@code existingElement} is unchanged.
   *
   * @param elements expected additional contents of {@link #container}
   */
  protected final void expectAdded(E... elements) {
    List<E> expected = copyToList(getSampleElements());
    expected.addAll(asList(elements));

            // Assert
            assertEquals(0, written, "Should report 0 bytes written");
            assertArrayEquals(original, buffer, "Buffer must remain unchanged");
        }

        @Test
        @DisplayName("Handles null destination without throwing and returns 0")
        void allowsNullBuffer() {
            // Arrange

    return new String[length];
  }

  @Override
  public final String[] createValueArray(int length) {
    return new String[length];
  }

  /** Returns the original element list, unchanged. */
  @Override
  public Iterable<Entry<String, String>> order(List<Entry<String, String>> insertionOrder) {
    return insertionOrder;
  }