docs: def kill(self):
          """
          Kill the running process and remove the PID/lock file.
          """
          try:
              kill(int(self.get()), 9)
              
          # Failed to kill the process
          except Exception as e:
              self.die('Failed to kill process: {}'.format(str(e)))
              
          # Remove the stale PID file
          self.remove()