docs: def control(self, on=[], off=[]):
          """
          This method serves as the primary interaction point
              to the controls interface.
          - The 'on' and 'off' arguments can either be a list or a single string.
              This allows for both individual device control and batch controls.
  
          Note:
              Both the onlist and offlist are optional. 
              If only one item is being managed, it can be passed as a string.
  
          Usage:
              - Turning off all devices:
                  ctrlobj.control(off="all")
              - Turning on all devices:
                  ctrlobj.control(on="all")
  
              - Turning on the light and fan ONLY (for example)
                  ctrlobj.control(on=["light", "fan"])
  
              - Turning on the light and turning off the fan (for example)
                  ctrolobj.control(on="light", off="fan")
  
          """
          controls = {"light", "valve", "fan", "pump"}
  
          def cast_arg(arg):
              if type(arg) is str:
                  if arg == "all":
                      return controls
                  else:
                      return {arg} & controls
              else:
                  return set(arg) & controls
  
          # User has requested individual controls.
          for item in cast_arg(on):
              self.manage(item, "on")
          for item in cast_arg(off):
              self.manage(item, "off")
          sleep(.01) # Force delay to throttle requests
          return self.update()