message: Set unread watermark if it refreshed it.
diff: @@ -205,6 +205,7 @@ export class ActivityFeedContainer {
  if (!response.items || !response.items.length) {
  return;
  }
  +
  if (clearOld) {
  this.clear();
  }
  @@ -216,6 +217,10 @@ export class ActivityFeedContainer {
  } else if (this.feedType === 'EventItem') {
  this.prepend(EventItem.populate(response.items));
  }
  +
  + if (response.unreadWatermark) {
  + this.notificationWatermark = response.unreadWatermark;
  + }
  }
  /**
  