package Ġorg . open lake . data . user Ċ Ċ interface ĠUser DataSource Ġ{ ĊĠĠĠ Ġsuspend Ġfun ĠgetUser By Username ( username : ĠString ): ĠUser ? ĊĠĠĠ Ġsuspend Ġfun Ġinsert User ( user : User ): ĠBoolean Ċ }