How to implement One shot Help in Alexa using alexa skills kit in nodejs?

Question

I am developing custom Alexa Skill using NodeJs. I got the following message from the certification team

Issue: One-shot help is not working. Pre-conditions – 1) Have enabled the skill "xyz".

Steps to reproduce:

Launch the Skill in one shot by saying "Alexa, ask xyz for help" and observe.

Actual result

Skill responds as "I did not understand what you said. Please say again."

Expected result:

The skill should be able to give help prompt in one shot utterance just the way it would give in the modal request saying "The skill helps bla bla bla (my help message when the user says help while using the skill)"

As per the documentation of One-Shot

https://developer.amazon.com/docs/custom-skills/voice-interface-and-user-experience-testing-for-a-custom-skill.html#46-one-shot-phrasing-for-sample-utterances

I did not find any sample implementation at their Github repository. How do I implement one-shot help as required by the certification team?