code: def magnet(self, name=True, size=True, trackers=True, tracker=False, validate=True):
          
          if validate:
              self.validate()
  
          parts = [f'xt=urn:btih:{self.infohash}']
          if name:
              parts.append(f'dn={utils.urlquote(self.name)}')
          if size:
              parts.append(f'xl={self.size}')
  
          if self.trackers is not None:
              if tracker:
                  parts.append(f'tr={utils.urlquote(self.trackers[0][0])}')
              elif trackers:
                  for tier in self.trackers:
                      for url in tier:
                          parts.append(f'tr={utils.urlquote(url)}')
  
          return 'magnet:?' + '&'.join(parts)
docs: BTIH Magnet URI
  
          :param bool name: Whether to include the name
          :param bool size: Whether to include the size
          :param bool trackers: Whether to include all trackers
          :param bool tracker: Whether to include only the first tracker of the
              first tier (overrides `trackers`)
          :param bool validate: Whether to run :meth:`validate` first