public CharacterPosition getLastNonWhitespacePosition()
  {
    return _lastNonWhitespacePosition;
  }
@Test
  public void testGetLastNonWhitespacePosition() throws IOException
  {
    LineColumnNumberWriter writer = new LineColumnNumberWriter(new StringWriter());
    writer.write("123");
    Assert.assertEquals(writer.getLastNonWhitespacePosition(), new LineColumnNumberWriter.CharacterPosition(1, 3));
    writer.write("\n ");
    Assert.assertEquals(writer.getLastNonWhitespacePosition(), new LineColumnNumberWriter.CharacterPosition(1, 3));
    writer.write("4");
    Assert.assertEquals(writer.getLastNonWhitespacePosition(), new LineColumnNumberWriter.CharacterPosition(2, 2));
  }