code: def close(self):
      if self._closed:
          return
      self._closed = True
      if self._mode == "w":
          self._write_close()
      else:
          self._read_close()
  
imports: import ctypes
  import pickle
  import uuid
  from io import BytesIO
  from typing import Tuple, Dict, List, Union
  from ..serialization import serialize, deserialize
  from ..utils import lazy_import, implements
  from .base import StorageBackend, StorageLevel, ObjectInfo, register_storage_backend
  from .core import StorageFileObject
  import numpy
  import pandas
label_desc: Use image node_id 10 for calling the CudaFileObject obj's underlying member method code with example usage: obj.close() without return types