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# 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


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