docs: def read_command(self):
          """
          Attempt to read the next command from the editor/server
          :return: boolean. Did we actually read a command?
          """
          # Do a non-blocking read here so the demo can keep running if there is no data
          comm = self.reader.byte(blocking=False)
          if comm is None:
              return False
  
          cmds = {
              SET_KEY: self.handle_set_key,
              DELETE_KEY: self.handle_delete_key,
              SET_ROW: self.handle_set_row,
              PAUSE: self.handle_pause,
              SAVE_TRACKS: self.handle_save_tracks
          }
  
          func = cmds.get(comm)
  
          if func:
              func()
          else:
              logger.error("Unknown command: %s", comm)
  
          return True