code: def save_as_files(self, storage, name_fn):
      for name, blocks in self._readback():
          f = storage.create_file(name_fn(name))
          for block in blocks():
              f.write(block)
          f.close()
  
imports: import errno
  import os
  import sys
  from threading import Lock
  from shutil import copyfileobj
  from whoosh.compat import BytesIO, memoryview_
  from whoosh.filedb.structfile import BufferFile, StructFile
  from whoosh.filedb.filestore import FileStorage, StorageError
  from whoosh.system import emptybytes
  from whoosh.util import random_name
label_desc: Use image node_id 5 for calling the CompoundWriter obj's underlying member method code with example usage: obj.save_as_files(storage, name_fn) without return types