package Ġcom . kaz ak ago . sto ref low able . origin Ċ Ċ internal Ġinterface ĠOrigin DataManager < DATA > Ġ{ ĊĊĠĠĠ Ġsuspend Ġfun Ġfetch (): ĠInternal F etched < DATA > ĊĊĠĠĠ Ġsuspend Ġfun Ġfetch Next ( next Key : ĠString ): ĠInternal F etched < DATA > ĊĊĠĠĠ Ġsuspend Ġfun Ġfetch Prev ( prev Key : ĠString ): ĠInternal F etched < DATA > Ċ } Ċ