code: public static void putSource(Bundle bundle, AccessTokenSource value) {
          Validate.notNull(bundle, "bundle");
          bundle.putSerializable(TOKEN_SOURCE_KEY, value);
      }
docs: Puts the enum indicating the source of the token into a Bundle.
  
  @param bundle
  A Bundle in which the enum should be stored.
  @param value
  enum indicating the source of the token
  
  @throws NullPointerException if the passed in Bundle is null