FeedOperation

A single operation (create, update, remove) on an feed.

Fields
update_mask	FieldMask FieldMask that determines which resource fields are modified in an update.
Union field operation operation. The mutate operation. operation can be only one of the following:
create	Feed Create operation: No resource name is expected for the new feed.
update	Feed Update operation: The feed is expected to have a valid resource name.
remove	string Remove operation: A resource name for the removed feed is expected, in this format: customers/{customer_id}/feeds/{feed_id}