ActivityFeed.fromAppBot constructor
      
      ActivityFeed.fromAppBot({ 
    
    
- required String toProfileId,
- required dynamic referenceId,
- required ActivityFeedType type,
- String message = '',
- String mediaUrl = '',
Implementation
ActivityFeed.fromAppBot({required String toProfileId, required referenceId,
  required ActivityFeedType type, this.message = '', this.mediaUrl = ''}) :
      id = '',
      ownerId = toProfileId,
      activityReferenceId = referenceId,
      profileId = CoreConstants.appBot,
      profileName = "${AppProperties.getAppName()} ${AppProperties.getAppBotName()}",
      profileImgUrl = AppProperties.getAppLogoUrl(),
      activityFeedType = type,
      createdTime = DateTime.now().millisecondsSinceEpoch,
      unread = true;