code: def __arrow_ext_deserialize__(cls, storage_type, serialized):
      width = int(serialized.decode())
      return cls(width)
  
imports: import contextlib
  import ctypes
  import gc
  import pyarrow
  import pytest
label_desc: Use image node_id 4 for calling the ParamExtType obj's underlying member method code with example usage: obj.__arrow_ext_deserialize__(cls, storage_type, serialized) and returns: cls