NoValidator implements Validator<Object> { @Override public void validate(String parameterName, Object value) throws ValidationException { }  @Override void validate(String parameterName, Object value);  }
@Test public void testValidateNullNull() throws ValidationException { getInstance().validate(null, null); }
@Test public void testValidateANull() throws ValidationException { getInstance().validate("a", null); }
@Test public void testValidateNullB() throws ValidationException { getInstance().validate(null, "b"); }
@Test public void testValidateAB() throws ValidationException { getInstance().validate("a", "b"); }