package Ġcom . github . ro th so . mass . extractor . network . ath ena Ċ Ċ import Ġcom . github . ro th so . mass . extractor . network . OAuth Authenticator Ċ import Ġcom . github . ro th so . mass . extractor . network . ath ena . response . Token Response Ċ import Ġio . reactivex . Observable Ċ import Ġretrofit 2 . http . Field Ċ import Ġretrofit 2 . http . Form Url Encoded Ċ import Ġretrofit 2 . http . Header Ċ import Ġretrofit 2 . http . POST Ċ Ċ /** Ċ Ġ* Ġ@ see ĠA then a Service Ċ Ġ* Ġ@ see ĠOAuth Authenticator Ċ Ġ*/ Ċ interface ĠOAuth Service Ġ{ ĊĊĠ Ġ@ Form Url Encoded ĊĠ Ġ@ POST (" token ") ĊĠ Ġfun Ġlogin ( ĊĠĠĠĠĠ Ġ@ Header (" Authorization ") Ġbasic : ĠString , ĊĠĠĠĠĠ Ġ@ Field (" grant _ type ") Ġgrant Type : ĠString ĊĠ Ġ): ĠObservable < Token Response > Ċ }