AdParameterOperation

A single operation (create, update, remove) on ad parameter.

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	AdParameter Create operation: No resource name is expected for the new ad parameter.
update	AdParameter Update operation: The ad parameter is expected to have a valid resource name.
remove	string Remove operation: A resource name for the ad parameter to remove is expected in this format: customers/{customer_id}/adParameters/{ad_group_id}~{criterion_id}~{parameter_index}