package Ġru . ot us . spring . k ush ch enko . hw 7 . model Ċ Ċ interface ĠShort Book Ġ{ ĊĠĠĠ Ġfun ĠgetId (): ĠInt ? ĊĠĠĠ Ġfun ĠgetName (): ĠString ĊĠĠĠ Ġfun Ġget Authors (): ĠList < Author >? ĊĠĠĠ Ġfun Ġget Gen res (): ĠList < Genre >? Ċ }