Classes extending the Observable base reactive class and implementing
the Observer interface at the same time (aka hot Observables).
||An Subject that emits the very last value followed by a completion event or the received error to Observers.
||Subject that emits the most recent item it has observed and all subsequent observed items to each subscribed
||Represents a hot Completable-like source and consumer of events similar to Subjects.
||Represents a hot Maybe-like source and consumer of events similar to Subjects.
||Subject that, once an
Observer has subscribed, emits all subsequently observed items to the
||Replays events to Observers.
||Represents a hot Single-like source and consumer of events similar to Subjects.
||Represents an Observer and an Observable at the same time, allowing
multicasting events from a single source to multiple child Subscribers.
||Subject that allows only a single Subscriber to subscribe to it during its lifetime.