docs: def string(cls, name, description=None, unit='',
                 default=None, initial_status=None):
          """Instantiate a new string sensor object.
  
          Parameters
          ----------
          name : str
              The name of the sensor.
          description : str
              A short description of the sensor.
          units : str
              The units of the sensor value. May be the empty string
              if there are no applicable units.
          default : string
              An initial value for the sensor. Defaults to the empty string.
          initial_status : int enum or None
              An initial status for the sensor. If None, defaults to
              Sensor.UNKNOWN. `initial_status` must be one of the keys in
              Sensor.STATUSES
  
          """
          return cls(cls.STRING, name, description, unit, None,
                     default, initial_status)