String providedService = request.getParameter(PARAMETER_SERVICE);
if(!registry.isServiceRegistered(providedService)){
setError(GDataResponse.NOT_FOUND,"no such service");
throw new FeedHandlerException("ProvicdedService is not registered -- Name: "+providedService);
}
ProvidedService provServiceInstance = registry.getProvidedService(providedService);
if(providedService == null){
setError(GDataResponse.BAD_REQUEST,"no such service");
throw new FeedHandlerException("no such service registered -- "+providedService);
}
try{