code: def add_to_manifest(self, manifest):
          
          # Add this service to list of services
          manifest.add_service(self.service.name)
  
          # Add environment variables
          uri = predix.config.get_env_key(self.use_class, 'ingest_uri')
          manifest.add_env_var(uri, self.get_ingest_uri())
  
          zone_id = predix.config.get_env_key(self.use_class, 'ingest_zone_id')
          manifest.add_env_var(zone_id, self.get_ingest_zone_id())
  
          uri = predix.config.get_env_key(self.use_class, 'query_uri')
          manifest.add_env_var(uri, self.get_query_uri())
  
          zone_id = predix.config.get_env_key(self.use_class, 'query_zone_id')
          manifest.add_env_var(zone_id, self.get_query_zone_id())
  
          manifest.write_manifest()
docs: Add useful details to the manifest about this service
          so that it can be used in an application.
  
          :param manifest: An predix.admin.app.Manifest object
              instance that manages reading/writing manifest config
              for a cloud foundry app.