code: def apply_host_template(self, host_ids, start_roles):
      
      return apply_host_template(self._get_resource_root(), self.name, self.clusterRef.clusterName, host_ids, start_roles)
docs: Apply a host template identified by name on the specified hosts and
      optionally start them.
      @param host_ids: List of host ids.
      @param start_roles: Whether to start the created roles or not.
      @return: An ApiCommand object.