TrueTimeRx initial in Application.onCreate(), where I should add clear() for this disposable?

Regarding example, we got a `Disposable` at time `TrueTimeRx` initial in `Application.onCreate()`, it should be added in a `CompositeDisposable` like this:

`private CompositeDisposable disposables;`
`disposables.add(trueTimeRxDisposable)`

Problem is we don't have something like `onDestroy` in `Application` layer, so where and when I should call `disposables.clear()`?

The issue points to the example's TrueTimeRx initialization in Application.onCreate(); start there and review how the Disposable is placed in a CompositeDisposable. Resolve and document when disposables.clear() should run for the Application lifecycle, making the example's cleanup guidance explicit.

Written by the indexing model from the issue text.