def mark_all(self, seen=True, read=False):
        '''
        Marks all of the feed's aggregated activities as seen or read or both.
        '''
        args = []
        if seen or self.track_unseen:
            args.append('unseen')
        if read and self.track_unread:
            args.append('unread')
        self.feed_markers.flush(*args)
dataset/ETHPy150Open tschellenbach/Stream-Framework/stream_framework/feeds/notification_feed/base.py/BaseNotificationFeed.mark_all/operator `and` -> `or`