package Ġde . j ens k ling en berg . she asy . data Ċ Ċ import Ġde . j ens k ling en berg . she asy . model . Device Ċ import Ġio . reactivex . Observable Ċ Ċ interface ĠDevices DataSource Ġ{ ĊĠĠĠ Ġ// ĠĠ Ġval Ġauth : ĠMutable List < Device > ĊĠĠĠ Ġfun Ġget Devices (): ĠObservable < List < Device >> ĊĊĠĠĠ Ġfun Ġadd Authorized Device ( device : ĠDevice ) ĊĠĠĠ Ġfun Ġremove Device ( device : ĠDevice ) ĊĊĊĠĠĠ Ġval Ġauth : ĠMutable List < Device > Ċ } Ċ