)
        next_step_output = self._execute_next_step(self.run_manager)
        output = self._process_next_step_output(next_step_output, self.run_manager)
        self.update_iterations()
        return output
    async def _acall_next(self) -> dict[str, Any]:
        """
        Perform a single iteration of the asynchronous AgentExecutorIterator.
        """
        # final output already reached: stopiteration (final output)
        if self.final_outputs is not None:
            await self.raise_stopasynciteration(self.final_outputs)
        # timeout/max iterations: stopiteration (stopped response)
        if not self.agent_executor._should_continue(self.iterations, self.time_elapsed):
            return await self._astop()
        assert (
            isinstance(self.run_manager, AsyncCallbackManagerForChainRun)
            or self.run_manager is None
        )
        next_step_output = await self._execute_next_async_step(self.run_manager)
        output = await self._aprocess_next_step_output(
            next_step_output, self.run_manager
        )
        self.update_iterations()
        return output