code: public void changeConfiguration(ChargingStationId chargingStationId, ConfigurationItem configurationItem, CorrelationToken correlationToken, AddOnIdentity addOnIdentity) {
          IdentityContext identityContext = new IdentityContext(addOnIdentity, new NullUserIdentity());
  
          commandGateway.send(new ChangeConfigurationItemCommand(chargingStationId, configurationItem, identityContext), correlationToken);
      }
docs: Change the configuration in the charging station. It has already happened on the physical charging station, but
  the Domain has not been updated yet.
  
  @param chargingStationId the charging station id.
  @param configurationItem the configuration item which has changed.
  @param correlationToken  the token to correlate commands and events that belong together.
  @param addOnIdentity     the identity of the add-on.