AdGroupCriterionLabel

A relationship between an ad group criterion and a label.

Fields
resource_name	string Immutable. The resource name of the ad group criterion label. Ad group criterion label resource names have the form: customers/{customer_id}/adGroupCriterionLabels/{ad_group_id}~{criterion_id}~{label_id}
ad_group_criterion	string Immutable. The ad group criterion to which the label is attached.
label	string Immutable. The label assigned to the ad group criterion.