package Ġcom . github . har sh ad n aw at he . coffee hut . domain . payment Ċ Ċ import Ġorg . springframework . data . mongodb . repository . Reactive Mongo Repository Ċ import Ġreactor . core . publisher . Mono Ċ Ċ interface ĠPayment Repository Ġ: ĠReactive Mongo Repository < Payment , ĠString > Ġ{ ĊĠĠĠ Ġfun ĠfindBy OrderId ( orderId : ĠString ) Ġ: ĠMono < Payment > Ċ }