Autogenerated update (2019-02-22)

Update:
- appengine_v1
- appengine_v1alpha
- appengine_v1beta
- cloudfunctions_v1
- cloudfunctions_v1beta2
- cloudresourcemanager_v1
- cloudresourcemanager_v1beta1
- cloudsearch_v1
- container_v1
- dialogflow_v2
- iam_v1
- spanner_v1
- tagmanager_v1
- tagmanager_v2
- testing_v1
- videointelligence_v1
- videointelligence_v1beta2
- videointelligence_v1p1beta1
- videointelligence_v1p2beta1

generated/google/apis/cloudfunctions_v1/classes.rb

@@ -322,7 +322,8 @@ module Google
         # @return [String]
         attr_accessor :runtime
       
-        # Output only. The email of the function's service account.
+        # The email of the function's service account. If empty, defaults to
+        # `project_id`@appspot.gserviceaccount.com.
         # Corresponds to the JSON property `serviceAccountEmail`
         # @return [String]
         attr_accessor :service_account_email