docs: def find_modified(since, filter_list=None, _connection=None, page_size=25,
          page_number=0, sort_by=enums.DEFAULT_SORT_BY,
          sort_order=enums.DEFAULT_SORT_ORDER):
          """
          List all videos modified since a certain date.
          """
          filters = []
          if filter_list is not None:
              filters = filter_list
          if not isinstance(since, datetime):
              msg = 'The parameter "since" must be a datetime object.'
              raise exceptions.PyBrightcoveError(msg)
          fdate = int(since.strftime("%s")) / 60  ## Minutes since UNIX time
          return connection.ItemResultSet('find_modified_videos',
              Video, _connection, page_size, page_number, sort_by, sort_order,
              from_date=fdate, filter=filters)