@CanIgnoreReturnValue
    final DefaultValueChecker runTester() {
      new NullPointerTester().testInstanceMethods(this, Visibility.PACKAGE);
      return this;
    }

    final void assertNonNullValues(Object... expectedValues) {
      assertEquals(expectedValues.length, arguments.size());
      for (int i = 0; i < expectedValues.length; i++) {