package Ġcom . clean architecture . data . datastore Ċ Ċ import Ġcom . rich re levance . recommend ations . Placement Response Info Ċ import Ġio . reactivex . Single Ċ Ċ interface ĠRich Re levance DataStore Ġ{ ĊĠĠĠ Ġfun Ġget Prom oted Products (): ĠSingle < Placement Response Info > Ċ }