package Ġkr . nin ety . data . remote Ċ Ċ import Ġio . reactivex . Single Ċ import Ġkr . nin ety . data . remote . model . Message Ċ import Ġkr . nin ety . data . remote . model . Photo Ċ Ċ interface ĠRemote Photo DataSource Ġ{ ĊĠĠĠ Ġfun Ġupload Photo ( film Uid : ĠString ): ĠSingle < Photo . Item > ĊĠĠĠ Ġfun Ġdownload Photo ( photo Uid : ĠString ): ĠSingle < Photo . Item > ĊĠĠĠ Ġfun Ġget Photo Info ( film Uid : ĠString ): ĠSingle < List < Photo . Item >> ĊĠĠĠ Ġfun Ġdelete Photo ( film Uid : ĠString ): ĠSingle < Message > Ċ }