code: def free_pull(self) -> None:
      # Free the buffer space and start pulling from remaining queue:
      self._pull_queue.pop(0)
      if len(self._pull_queue) >= self.pool_size:
          data = self._pull_queue[self.pool_size - 1]
          idx, src, offset, count, index = data
          self._async_pull(idx, src, offset, count, index)
      elif len(self._pull_queue) == 0:
          self._pull_index = -1
  
imports: from typing import Optional, Callable
  import torch
  from torch import Tensor
  from torch.cuda import Stream
  from dig_ext.sync import synchronize, read_async, write_async
label_desc: Use image node_id 10 for calling the AsyncIOPool obj's underlying member method code with example usage: obj.free_pull() without return types