package Ġsample . j at ac ago . com . sample mv pc lean app . domain . use case Ċ Ċ import Ġio . reactivex . Single Ċ import Ġsample . j at ac ago . com . sample mv pc lean app . domain . entities . Product Ċ Ċ interface ĠGet Product List For S ailing UseCase Ġ{ ĊĠĠĠ Ġoperator Ġfun Ġinvoke ( s ailing Id : ĠString ): ĠSingle < List < Product >> Ċ } Ċ