chain.add(new FullWidthToHalfWidthAlphabetNormalizer());

        String result = chain.normalize("ａｂｃ", "field");

        assertEquals("abc", result);
    }

    @Test
    public void test_multipleNormalizers() throws Exception {
        NormalizerChain chain = new NormalizerChain();
        chain.add(new FullWidthToHalfWidthAlphabetNormalizer());
        chain.add(new HankakuKanaToZenkakuKana());