@Override
    public void ignorableWhitespace(char[] ch, int start, int length) throws SAXException {
        filter(ch, start, length, ignorableWhitespaceOutput);
    }
@Test
    public void testNormalWhitespace() throws SAXException {
        safe.ignorableWhitespace("abc".toCharArray(), 0, 3);
        assertEquals("abc", output.toString());
    }