* </ul>
   */
  public void testNulls(Class<?> cls) {
    try {
      doTestNulls(cls, Visibility.PACKAGE);
    } catch (Exception e) {
      throwIfUnchecked(e);
      throw new RuntimeException(e);
    }
  }

  void doTestNulls(Class<?> cls, Visibility visibility)
      throws ParameterNotInstantiableException,
          IllegalAccessException,

   * </ul>
   */
  public void testNulls(Class<?> cls) {
    try {
      doTestNulls(cls, Visibility.PACKAGE);
    } catch (Exception e) {
      throwIfUnchecked(e);
      throw new RuntimeException(e);
    }
  }

  void doTestNulls(Class<?> cls, Visibility visibility)
      throws ParameterNotInstantiableException,
          IllegalAccessException,

         * for a package-private utility class. So we skip the class entirely instead.
         */
        continue;
      }
      try {
        tester.doTestNulls(classToTest, visibility);
      } catch (Throwable e) {
        throw sanityError(classToTest, NULL_TEST_METHOD_NAMES, "nulls test", e);
      }
    }
  }

  /**

         * for a package-private utility class. So we skip the class entirely instead.
         */
        continue;
      }
      try {
        tester.doTestNulls(classToTest, visibility);
      } catch (Throwable e) {
        throw sanityError(classToTest, NULL_TEST_METHOD_NAMES, "nulls test", e);
      }
    }
  }

  /**

  }

  public void testGoodNulls() throws Exception {
    tester.testNulls(GoodNulls.class);
  }

  public void testNoNullCheckNeededDespiteNotInstantiable() throws Exception {
    tester.doTestNulls(NoNullCheckNeededDespiteNotInstantiable.class, Visibility.PACKAGE);
  }

  public void testNulls_interface() {
    tester.testNulls(AnInterface.class);
  }

  public void testNulls_abstractClass() {