code: private boolean shouldIconBeShown() {
          SharedPreferences sharedPreferences =
                  PreferenceManager.getDefaultSharedPreferences(getActivity());
          String key = getString(R.string.show_bottom_sheet_icon_preference_key);
          boolean defaultValue =
                  getResources().getBoolean(R.bool.show_bottom_sheet_icon_preference_default_value);
          return sharedPreferences.getBoolean(key, defaultValue);
      }
docs: Returns, whether the icon of bottom sheets should be shown, depending on the app's settings,
  or not.
  
  @return True, if the icon of bottom sheets should be shown, false otherwise