package Ġcom . b umble . headline . model . api čĊč Ċ import Ġcom . b umble . headline . model . entity . Article Collection č Ċ import Ġio . reactivex . Observable č Ċ import Ġretrofit 2 . http . GET č Ċ import Ġretrofit 2 . http . Query Map čĊč Ċ interface ĠFetch Story API Ġ{ čĊĠĠĠ Ġ@ GET (" v 2 / top - head lines ") čĊĠĠĠ Ġfun Ġload Story (@ Query Map Ġoptions : ĠMap < String , ĠString >): ĠObservable < Article Collection > č Ċ }