code: def add_lifecycle_set_storage_class_rule(self, storage_class, **kw):
          
          rules = list(self.lifecycle_rules)
          rules.append(LifecycleRuleSetStorageClass(storage_class, **kw))
          self.lifecycle_rules = rules
docs: Add a "delete" rule to lifestyle rules configured for this bucket.
  
          See https://cloud.google.com/storage/docs/lifecycle and
               https://cloud.google.com/storage/docs/json_api/v1/buckets
  
          .. literalinclude:: snippets.py
            :start-after: [START add_lifecycle_set_storage_class_rule]
            :end-before: [END add_lifecycle_set_storage_class_rule]
  
          :type storage_class: str, one of :attr:`_STORAGE_CLASSES`.
          :param storage_class: new storage class to assign to matching items.
  
          :type kw: dict
          :params kw: arguments passed to :class:`LifecycleRuleConditions`.