code: public static Boolean notExists(
              EvaluationContext ctx,
              List tests,
              Object target) {
  
          for (Object test : tests) {
              Boolean r = applyUnaryTest(ctx, test, target);
              if (r == null || r) {
                  return false;
              }
          }
  
          return true;
      }
docs: Implements a negated exists.
  <p>
  Returns <strong>false</strong> when at least one of the elements of the list
  <strong>matches</strong> the target.
  The list may contain both objects (equals) and UnaryTests (apply)