code: public Response handle(boolean pretty) throws WebApplicationException
      {
          try
          {
              // Call Authlete's /api/service/jwks/get API. It returns the JWK Set
              // of the service. Of course, private keys are not included.
              return getApiCaller().serviceJwksGet(pretty, false);
          }
          catch (WebApplicationException e)
          {
              // The API call raised an exception.
              throw e;
          }
          catch (Throwable t)
          {
              // Unexpected error.
              throw unexpected("Unexpected error in JwksRequestHandler", t);
          }
      }
docs: Handle a request to a JWK Set endpoint. This method internally calls
  Authlete's {@code /api/service/jwks/get} API.
  
  @param pretty
  {@code true} to return the output JSON in pretty format.
  
  @return
  A response that should be returned from the endpoint to
  the client application.
  
  @throws WebApplicationException
  An error occurred.