code: def get_videos_for_course(course_id, sort_field=None, sort_dir=SortDirection.asc, pagination_conf=None):
      
      return _get_videos_for_filter(
          {'courses__course_id': six.text_type(course_id), 'courses__is_hidden': False},
          sort_field,
          sort_dir,
          pagination_conf,
      )
docs: Returns an iterator of videos for the given course id.
  
      Args:
          course_id (String)
          sort_field (VideoSortField)
          sort_dir (SortDirection)
  
      Returns:
          A generator expression that contains the videos found, sorted by the
          given field and direction, with ties broken by edx_video_id to ensure a
          total order.