new_contents: from ckan.plugins.core import SingletonPlugin, implements
  from ckanext.harvest.interfaces import IHarvester
  from ckanext.harvest.harvesters import HarvesterBase
  
  class XRoadHarvester(HarvesterBase):
  
      def info(self):
  
          return {}
  
      def validate_config(self, config):
  
          return ""
  
      def gather_stage(self, harvest_job):
  
          return []
  
  
      def fetch_stage(self, harvest_object):
  
          return True
  
      def import_stage(self, harvest_object):
  
          return True
  
subject: add harvester template