Per the parent task:
In this A/B test setup, a randomly selected half of users who get the Growth features will get Add a Link tasks, and the other randomly selected half will get unstructured link tasks. We prefer to give users maximum exposure to these tasks and will therefore not give these users any copyedit tasks by default. In other words, for the purposes of this experiment, we’ll change the default difficulty filters from “links” and “copyedit” to just “links”. For wikis that don’t have unstructured link tasks, all those users get “add a link” and in that case we’ll exclude that wiki from the experiment.
Our code so far has assumed that all defined task types are available to all users. Here we will want to make the necessary changes so that we can A/B test providing the structured link task (link-recommendation) type to some users and the unstructured links task (links) to others.