This is a hybrid tactic meaning if there are no results for the first tactic, the recommender will try the next one. This fall-through will continue through all the tactics until a result is found.
Tactic Cascade: Bought With Cart Contents > Bought With Recently Viewed > Viewed With Recently Viewed > Recently Viewed > Historically Viewed (up to 12 products)
Your website ID provided by PA
The customerId that you want to query for
This takes in an array of Ref IDs in the customer cart (used for Bought with Cart Contents)