CampaignDraftOperation

A single operation (create, update, remove) on a campaign draft.

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	CampaignDraft Create operation: No resource name is expected for the new campaign draft.
update	CampaignDraft Update operation: The campaign draft is expected to have a valid resource name.
remove	string Remove operation: The campaign draft is expected to have a valid resource name, in this format: customers/{customer_id}/campaignDrafts/{base_campaign_id}~{draft_id}