code: def is_valid_coll(self, coll):
          
          #if coll == self.all_coll:
          #    return True
  
          return (coll in self.warcserver.list_fixed_routes() or
                  coll in self.warcserver.list_dynamic_routes())
docs: Determines if the collection name for a request is valid (exists)
  
          :param str coll: The name of the collection to check
          :return: True if the collection is valid, false otherwise
          :rtype: bool