docs: async def stop(self) -> None:
          """Coroutine to stop execution of this server."""
          if not self._is_running:
              raise SublemonRuntimeError(
                  'Attempted to stop an already-stopped `Sublemon` instance')
  
          await self.block()
          self._poll_task.cancel()
          self._is_running = False
          with suppress(asyncio.CancelledError):
              await self._poll_task