ignoreElements
ObservableLike
initial
Behavior
Replay
ReplayLimited
interleave
ObservableLike
interleave2
Observable
interval
Observable
intervalAtFixedRate
Observable
intervalWithFixedDelay
Observable
isCanceled
PublishToOneSubject
isEmptyF
ObservableLike
isEmptyL
Observable
isEvicted
OverflowStrategy
Evicted
isSynchronous
OverflowStrategy
Synchronous