# observeOn

Wraps the source sequence in order to run its observer callbacks on the specified scheduler.

This only invokes observer callbacks on a scheduler. In case the subscription and/or unsubscription actions have side-effects that require to be run on a scheduler, use subscribeOn.

## Arguments

1. `scheduler` _(`Scheduler`)_:  Scheduler to notify observers on.

## Returns

_(`Observable`)_: The source sequence whose observations happen on the specified scheduler.

## Example
