I would do it more or less like this:
- the post and delete will always return to get, so use postman.setNextRequest(“Get”);
- the get request needs to figure out where to go next, post or delete. You can make the decision by evaluating a variable
Here is a sample collection exemplifying this:
https://www.getpostman.com/collections/8f80d004a0574c62ecce
It will stop after 3 iterations. I hope it helps.