code: def persistent_id(self, obj):
      if isinstance(obj, xc.LoadedExecutable):
          return ("exec", obj.client.serialize_executable(obj))
      if isinstance(obj, xc._xla.Executable):
          return ("exec", obj.serialize())
      if isinstance(obj, self.device_types):
          return ("device", obj.id)
      if isinstance(obj, self.client_types):
          return ("client",)
  
file_path: jax/jax/experimental/serialize_executable.py
imports: from __future__ import annotations
  import pickle
  import io
  from typing import Optional, Union
  import jax
  from jax._src.lib import xla_client
label_desc: Use image node_id 1 for calling the _JaxPjrtPickler obj's underlying member method code with example usage: obj.persistent_id(obj) and returns: str,  obj, str,  obj, str,  obj, str