code: @Override
      public void setAccessToken(@NonNull AccessToken accessToken) {
          sharedPreferences.edit().putLong(accessTokenKey + DATE_KEY_SUFFIX, accessToken.getExpiresIn()).apply();
          sharedPreferences.edit().putString(accessTokenKey + TOKEN_KEY_SUFFIX, accessToken.getToken()).apply();
          sharedPreferences.edit().putStringSet(accessTokenKey + SCOPES_KEY_SUFFIX,
                  AuthUtils.scopeCollectionToStringSet(accessToken.getScopes())).apply();
          sharedPreferences.edit().putString(accessTokenKey + REFRESH_TOKEN_KEY_SUFFIX, accessToken.getRefreshToken()).apply();
          sharedPreferences.edit().putString(accessTokenKey + TOKEN_TYPE_KEY_SUFFIX, accessToken.getTokenType()).apply();
      }
docs: Stores the {@link AccessToken}.