code: def check_schedule(
      self, schedule: Sequence[Tuple[Any, int, int]]
  ) -> None:
      if len(schedule) == 0:
          logger.warning(
              "You specified empty schedule for profiling. No data will be captured."
          )
  
      pq: Any = queue.PriorityQueue()
      for cls, begin, end in schedule:
          assert (
              begin >= 0
          ), f"Begin step of profiler must be non-negative, found: {begin}"
          assert (
              end > 0
          ), f"End step of profiler must be positive, found: {end}"
          assert (
              begin < end
          ), f"Start must be before the end, found: begin={begin} and end={end}"
  
          pq.put((begin, end))
  
      prev_end = -1
      for begin, end in pq.queue:
          assert begin >= prev_end, (
              "There is some overlapping in profiler scheduling. Please do not"
              + " overlap profilers by step as they may affect each other. Schedule:"
              + f" {schedule}"
          )
          prev_end = end
  
imports: import logging
  import os
  import queue
  import socket
  import weakref
  from dataclasses import dataclass
  from pathlib import Path
  from typing import Any, List, Optional, Sequence, Tuple
  import torch.cuda.memory
  import torch.cuda.nvtx
  import torch.nn
  import torch.profiler
  import torch.utils.hooks
label_desc: Use image node_id 2 for calling the _Profiler obj's underlying member method code with example usage: obj.check_schedule(schedule) without return types