@Override
    public void onLoaderReset(final Loader<SortedList<T>> loader) {
        isLoading = false;
    }
Called when a previously created loader is being reset, and thus
making its data unavailable.  The application should at this point
remove any references it has to the Loader's data.

@param loader The Loader that is being reset.
android/modules/module_filepicker/src/main/java/com/nononsenseapps/filepicker/AbstractFilePickerFragment.java