/// <summary>
/// Creates an AdGroupCriterionOperation for the given criterion
/// </summary>
/// <param name="criterion">The criterion we want to add</param>
private void CreateAddOperation(AdGroupCriterion criterion) {
AdGroupCriterionOperation operation = new AdGroupCriterionOperation();
operation.operand = criterion;
operation.@operator = Operator.ADD;
this.operations.Add(operation);
}
