@Test
 public void testValidateRequired_Empty() {
   FormValidation actual = FormValidation.validateRequired("  ");
   assertNotNull(actual);
   assertEquals(FormValidation.Kind.ERROR, actual.kind);
 }
 @Test
 public void testValidateRequired_OK() {
   FormValidation actual = FormValidation.validateRequired("Name");
   assertEquals(FormValidation.ok(), actual);
 }