This task is about making sure people do not receive multiple notifications for a single signed talk page edit.
In this task we are considering "topic subscription" and "mention" events. (There are also "user talk" events, but those will be considered elsewhere).
- IF at "Time 1" Marcus subscribes to "Topic A"
- AND at "Time 2" Ashley posts a new comment in "Topic A" and mentions Marcus in said comment
- THEN at "Time 2" Marcus should receive ONE notification alerting him that Ashley has mentioned him in a comment.
- The Desired behavior is implemented