ABID in Whatsapp URL schemes

Question

Yesterday Whatsapp updated their iOS application and released official URL scheme (api hooks).

I wanted to play a little with it and I\'m now facing the problem that

Answer 1

Two recent solutions (July 2017)

I've found, tested and refered two new different solutions in THIS OTHER ANSWER (because S.O. policies I had to put a link to the solution, no duplicates).