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<div class="block"><p><p>Created by Kevalpatel2106 on 30-Nov-17.
A lifecycle-aware observable that sends only new updates after subscription, used for events like
navigation and Snackbar messages.</p></p><p><p><p>This avoids a common problem with events: on configuration change (like rotation) an update
can be emitted if the observer is active. This LiveData only calls the observable if there's an
explicit call to setValue() or call().</p><p>Note that only one observer is going to be notified of changes.<