CachedObservable is an observable that wraps a regular
Observable, initiating the connection on the first
subscribe() and then staying connected for as long as
the source is emitting.
Represents an Observable that waits for
the call to
starting to emit elements to its subscriber(s).
GroupedObservable is an observable type generated
Defines the available operations for observable-like instances.
RefCountObservable is an observable that wraps a
ConnectableObservable, initiating the connection on the first
subscribe() and then staying connected as long as there is at least
one subscription active.