package Ġorg . sky f aced . tod i . services . public Ċ Ċ import Ġorg . sky f aced . tod i . models . user . User Ċ import Ġorg . sky f aced . tod i . models . user . User Insert Ċ import Ġorg . sky f aced . tod i . services . user . UserRepository Ċ Ċ class ĠPublic ServiceImpl ( private Ġval Ġuser Repository : ĠUser Repository ) Ġ: ĠPublic Service Ġ{ ĊĠĠĠ Ġoverride Ġsuspend Ġfun Ġregister ( user Insert : ĠUser Insert ): ĠUser Ġ{ ĊĠĠĠĠĠĠĠ Ġreturn Ġuser Repository . insert And GetUser ( user Insert ) ĊĠĠĠ Ġ} ĊĊĠĠĠ Ġoverride Ġsuspend Ġfun Ġcheck Username Availability ( username : ĠString ): ĠBoolean Ġ{ ĊĠĠĠĠĠĠĠ Ġreturn Ġuser Repository . getUser Entity By Username ( username ) Ġ== Ġnull ĊĠĠĠ Ġ} Ċ } Ċ