### Question:
LangIdV3 implements ILangIdClassifier { @Override public DetectedLanguage classify(CharSequence str, boolean normalizeConfidence) { reset(); append(str); return classify(normalizeConfidence); } LangIdV3();  LangIdV3(Model model); @Override DetectedLanguage classify(CharSequence str, boolean normalizeConfidence); @Override void reset(); @Override void append(CharSequence str); @Override void append(ByteBuffer buffer); @Override void append(byte [] array, int start, int length); @Override DetectedLanguage classify(boolean normalizeConfidence); @Override List<DetectedLanguage> rank(boolean normalizeConfidence);  }### Answer:
@Test public void testSanity() { LangIdV3 langid = new LangIdV3(); for (String [] langString : new String [][] { {"en", "Mike McCandless rocks the boat."}, {"pl", "W Szczebrzeszynie chrząszcz brzmi w trzcinie"}, {"it", "Piano italiano per la crescita: negoziato in Europa sugli investimenti «virtuosi»"} }) { DetectedLanguage result = langid.classify(langString[1], true); assertEquals(langString[0], result.langCode); } }