code: public Set<Evse> getEvses(Long chargingStationTypeId) {
          ChargingStationType chargingStationType = chargingStationTypeRepository.findOne(chargingStationTypeId);
  
          return chargingStationType.getEvses();
      }
docs: Gets the Evses of a charging station type.
  
  @param chargingStationTypeId    charging station type identifier.
  @return set of Evses