code: public Hlr getViewHlr(final String hlrId) throws GeneralException, UnauthorizedException, NotFoundException {
          if (hlrId == null) {
              throw new IllegalArgumentException("Hrl ID must be specified.");
          }
          return messageBirdService.requestByID(HLRPATH, hlrId, Hlr.class);
      }
docs: Retrieves the information of an existing HLR. You only need to supply the unique message id that was returned upon creation or receiving.
  
  @param hlrId ID as returned by getRequestHlr in the id variable
  @return Hlr Object
  @throws UnauthorizedException if client is unauthorized
  @throws GeneralException      general exception