code: public Evse getEvse(Long chargingStationTypeId, Long id) {
          ChargingStationType chargingStationType = chargingStationTypeRepository.findOne(chargingStationTypeId);
  
          return getEvseById(chargingStationType, id);
      }
docs: Find an evse based on its id.
  
  @param chargingStationTypeId charging station identifier.
  @param id                    the id of the evse to find.
  @return the evse.