package Ġco . project . client . util . extension Ċ Ċ import Ġrx . Subscription Ċ import Ġrx . subscriptions . Composite Subscription Ċ Ċ fun ĠSubscription . addTo ( composite Subscription : ĠComposite Subscription ) Ġ{ ĊĠĠĠ Ġcomposite Subscription . add ( this ) Ċ } Ċ