text: from ipv8.database import database_blob
  
  from pony import orm
  
  
  def define_binding(db):
      class TorrentState(db.Entity):
          """
          This ORM class represents torrent swarms. It is used by HealthChecker.
          """
  
          rowid = orm.PrimaryKey(int, auto=True)
          infohash = orm.Required(database_blob, unique=True)
          seeders = orm.Optional(int, default=0)
          leechers = orm.Optional(int, default=0)
          last_check = orm.Optional(int, size=64, default=0)
          metadata = orm.Set('TorrentMetadata', reverse='health')
          trackers = orm.Set('TrackerState', reverse='torrents')
  
      return TorrentState
  