code: def _save(original_fn, obj, f, *args, **kwargs):
      ret = original_fn(obj, f, *args, **kwargs)
  
      # if there is no main task or this is a nested call
      if not PatchPyTorchModelIO._current_task:
          return ret
  
      # pytorch-lightning check if rank is zero
      if hasattr(obj, "is_global_zero"):
          if not obj.is_global_zero:
              return ret
      elif hasattr(obj, "trainer") and hasattr(
          obj.trainer, "is_global_zero"
      ):
          if not obj.trainer.is_global_zero:
              return ret
  
      # noinspection PyBroadException
      try:
          if isinstance(f, six.string_types):
              filename = f
          elif hasattr(f, "as_posix"):
              filename = f.as_posix()
          elif hasattr(f, "name"):
              # noinspection PyBroadException
              try:
                  f.flush()
              except Exception:
                  pass
  
              if not isinstance(f.name, six.string_types):
                  # Probably a BufferedRandom object that has no meaningful name (still no harm flushing)
                  return ret
  
              filename = f.name
          else:
              filename = (
                  PatchPyTorchModelIO.__get_cached_checkpoint_filename()
              )
      except Exception:
          filename = (
              PatchPyTorchModelIO.__get_cached_checkpoint_filename()
          )
  
      # give the model a descriptive name based on the file name
      # noinspection PyBroadException
      try:
          model_name = (
              Path(filename).stem if filename is not None else None
          )
      except Exception:
          model_name = None
      WeightsFileHandler.create_output_model(
          obj,
          filename,
          Framework.pytorch,
          PatchPyTorchModelIO._current_task,
          singlefile=True,
          model_name=model_name,
      )
  
      return ret
  
imports: import sys
  import six
  import threading
  from pathlib2 import Path
  from ...binding.frameworks.base_bind import PatchBaseModelIO
  from ..frameworks import _patched_call, _patched_call_no_recursion_guard, WeightsFileHandler, _Empty
  from ..import_bind import PostImportHookPatching
  from ...config import running_remotely
  from ...model import Framework
label_desc: Use image node_id 7 for calling the PatchPyTorchModelIO obj's underlying member method code with example usage: obj._save(original_fn, obj, f) and returns: ret, ret, ret, ret, ret