code: def fetch(cls, channel, start, end, host=None, port=None, verbose=False,
                connection=None, verify=False, pad=None, allow_tape=None,
                scaled=None, type=None, dtype=None):
          
          return cls.DictClass.fetch(
              [channel], start, end, host=host, port=port, verbose=verbose,
              connection=connection, verify=verify, pad=pad, scaled=scaled,
              allow_tape=allow_tape, type=type, dtype=dtype)[str(channel)]
docs: Fetch data from NDS
  
          Parameters
          ----------
          channel : `str`, `~gwpy.detector.Channel`
              the data channel for which to query
  
          start : `~gwpy.time.LIGOTimeGPS`, `float`, `str`
              GPS start time of required data,
              any input parseable by `~gwpy.time.to_gps` is fine
  
          end : `~gwpy.time.LIGOTimeGPS`, `float`, `str`
              GPS end time of required data,
              any input parseable by `~gwpy.time.to_gps` is fine
  
          host : `str`, optional
              URL of NDS server to use, if blank will try any server
              (in a relatively sensible order) to get the data
  
          port : `int`, optional
              port number for NDS server query, must be given with `host`
  
          verify : `bool`, optional, default: `False`
              check channels exist in database before asking for data
  
          scaled : `bool`, optional
              apply slope and bias calibration to ADC data, for non-ADC data
              this option has no effect
  
          connection : `nds2.connection`, optional
              open NDS connection to use
  
          verbose : `bool`, optional
              print verbose output about NDS progress, useful for debugging;
              if ``verbose`` is specified as a string, this defines the
              prefix for the progress meter
  
          type : `int`, optional
              NDS2 channel type integer
  
          dtype : `type`, `numpy.dtype`, `str`, optional
              identifier for desired output data type