code: def stream(self, stream):
      return self.hpu.stream(stream)
  
imports: import os
  import pkgutil
  import importlib
  import torch
  from .abstract_accelerator import DeepSpeedAccelerator
label_desc: Use image node_id 18 for calling the HPU_Accelerator obj's underlying member method code with example usage: obj.stream(stream) and returns: self