package Ġcom . k ato h . camp us schedule . models . net Ċ Ċ import Ġcom . k ato h . camp us schedule . models . entity . Book Data Ċ import Ġretrofit 2 . Response Ċ import Ġretrofit 2 . http . GET Ċ import Ġretrofit 2 . http . Query Map Ċ Ċ interface ĠBooks Api Interface Ġ{ ĊĠĠĠ Ġ@ GET ("/ books / v 1 / volumes ") ĊĠĠĠ Ġsuspend Ġfun Ġfetch Book ( ĊĠĠĠĠĠĠĠ Ġ@ Query Map Ġquery Parameters : ĠMutable Map < String , ĠAny > ĊĠĠĠ Ġ): ĠResponse < Book Data > Ċ }