code: def query(cls, name, use_kerberos=None, debug=False):
          
          channellist = ChannelList.query(name, use_kerberos=use_kerberos,
                                          debug=debug)
          if not channellist:
              raise ValueError("No channels found matching '%s'" % name)
          if len(channellist) > 1:
              raise ValueError("%d channels found matching '%s', please refine "
                               "search, or use `ChannelList.query` to return "
                               "all results" % (len(channellist), name))
          return channellist[0]
docs: Query the LIGO Channel Information System for the `Channel`
          matching the given name
  
          Parameters
          ----------
          name : `str`
              name of channel
  
          use_kerberos : `bool`, optional
              use an existing Kerberos ticket as the authentication credential,
              default behaviour will check for credentials and request username
              and password if none are found (`None`)
  
          debug : `bool`, optional
              print verbose HTTP connection status for debugging,
              default: `False`
  
          Returns
          -------
          c : `Channel`
               a new `Channel` containing all of the attributes set from
               its entry in the CIS