package Ġcom . md ream fe ver . f star . repository Ċ Ċ import Ġcom . md ream fe ver . f star . model . FStar Admin Ċ import Ġorg . springframework . data . jpa . repository . Jpa Repository Ċ Ċ interface ĠFStar Admin Repository Ġ: ĠJ pa Repository < FStar Admin , ĠInt > Ġ{ ĊĠĠĠ Ġfun ĠfindBy Username ( username : ĠString ): ĠFStar Admin ? Ċ }