Method removeObservers

app/src/main/java/androidx/lifecycle/LiveData.java:259–268

Removes all observers that are tied to the given LifecycleOwner. @param owner The LifecycleOwner scope for the observers to be removed.

(final @NonNull LifecycleOwner owner)

     * @param owner The {@code LifecycleOwner} scope for the observers to be removed.
     */
    @SuppressWarnings("WeakerAccess")
    @MainThread
    public void removeObservers(final @NonNull LifecycleOwner owner) {
        assertMainThread("removeObservers");
        for (Map.Entry<Observer<? super T>, ObserverWrapper> entry : mObservers) {
            if (entry.getValue().isAttachedTo(owner)) {
                removeObserver(entry.getKey());
            }
        }
    }

    /**
     * Posts a task to a main thread to set the given value. So if you have a following code