recordCompleted method
Applies the permanent stop for campaignKey (on "Digia Experience
Completed") when its policy opted into stopOn: experienceCompleted.
Implementation
void recordCompleted(String campaignKey) {
final services = this.services();
final campaign = services?.campaignStore.find(campaignKey);
if (services == null || campaign == null) return;
services.frequencyManager.recordCompleted(campaign);
}