i uploaded a demo of my samplehttps://youtu.be/7czI_DJNLXIif this is what you are looking for, I can send you the package

Let me find a sample for you 

https://experienceleague.adobe.com/docs/experience-manager-learn/forms/zipping-form-attachments/introduction.html?lang=en

Let me see if I have something for this use case

Use this thread to ask any questions related to the course on using Azure portal storage account with AEM Forms CS on Experience League. Experts are monitoring this thread to ensure your questions are answered

i just included the DevelopingWithServiceUSer.jar in my project and was able to get everything workingimport com.mergeandfuse.getserviceuserresolver.GetResolver; @referenceGetResolver getResolver; ResourceResolver rr = getResolver.getFormsServiceResolver(); my eclipe project  

Did you configure your Assign Task as shown below?  

in your project's POM.xml file add the following<dependency><groupId>com.day.cq</groupId><artifactId>serviceuser</artifactId><version>1.0</version><type>bundle</type><scope>system</scope><systemPath>C:\AEMFormsBundles\DevelopingWithServiceUser.jar</systemPath></dependency>The systemPath value will d...

I don’t think  swagger spec does not allow you to provide validation rules so you will have to do the validation using rule editor 

good to know. Thanks for getting back