package Ġcom . my world . s chat . data . repository Ċ Ċ import Ġcom . my world . s chat . data . entity . Chat Group Photo Ċ import Ġorg . springframework . data . mongodb . repository . Mongo Repository Ċ import Ġorg . springframework . stereotype . Repository Ċ Ċ @ Repository Ċ interface ĠChat Group Photo Repository Ġ: ĠMongo Repository < Chat Group Photo , ĠString > Ċ