code: def add_buffers(self, buffer_list):
      assert len(self.all_buffers) == 0
      assert all([buffer.is_pinned() for buffer in buffer_list])
      dtype = buffer_list[0].dtype
      assert all([buffer.dtype == dtype for buffer in buffer_list])
  
      self.dtype = dtype
      self.all_buffers = [SwapBuffer(buffer) for buffer in buffer_list]
      self.free_buffer_index += [
          i for i in range(len(self.all_buffers))
      ]
      self.max_numel = max([buffer.numel() for buffer in buffer_list])
      self.timer_names = set()
  
imports: import torch
  from deepspeed import comm
  from deepspeed.utils.logging import logger
  from deepspeed.runtime.swap_tensor.utils import swap_out_tensors, SwapBuffer
label_desc: Use image node_id 3 for calling the AsyncTensorSwapper obj's underlying member method code with example usage: obj.add_buffers(buffer_list) without return types