Returns an observable sequence that terminates with an exception, using the specified scheduler to send out the single onError message.
Any): Absolute (specified as a Date object) or relative time (specified as an integer denoting milliseconds) at which to produce the first value.
Scheduler): Scheduler to send the exceptional termination call on. If not specified, defaults to the immediate scheduler.
Observable): The observable sequence that terminates exceptionally with the specified exception object.