@Test
  public void writeIndexedBytes() {
    out.writeUTF8Bytes("abcdefg £グ".getBytes(SystemX.UTF8), 1, 3);
    out.writeUTF8Bytes(" 12345".getBytes(SystemX.UTF8), 1, 1);

    assertStreamEquals("bc");
  }
  @Test
  public void writeBytes() {
    out.writeUTF8Bytes("abcdefg £グ".getBytes(SystemX.UTF8));
    out.writeUTF8Bytes(" 12345".getBytes(SystemX.UTF8));

    assertStreamEquals("abcdefg £グ 12345");
  }