``` interface Preference<DefinitelyT: Any, Some...

# announcements

[natpryce]

interface Preference<DefinitelyT: Any, SometimesDefinitelyT: DefinitelyT?> {
  fun get(): SometimesDefinitelyT
  fun stream(): Observable<DefinitelyT>
}


typealias NotNullablePreference<T> = Preference<T,T>

typealias NullablePreference<T> = Preference<T,T?>