code: private void updateAuthorizationList(final ChargingStation chargingStation, final Set<LocalAuthorization> updatedLocalAuthorizations) {
          Set<LocalAuthorization> authorizationList =  chargingStation.getLocalAuths();
          Iterables.removeIf(authorizationList, new Predicate<LocalAuthorization>() {
              @Override
              public boolean apply(@Nullable LocalAuthorization identifyingToken) {
                  return updatedLocalAuthorizations != null && updatedLocalAuthorizations.contains(identifyingToken);
              }
          });
  
          authorizationList.addAll(updatedLocalAuthorizations);
      }
docs: Updates the local representation of the charging station authorization list.
  Tokens in the updatedIdentificationTokens will be removed from the local operator api list.
  
  @param chargingStation               the chargingstation.
  @param updatedLocalAuthorizations    the updated tokens.