code: def assemble(dbfile, store, names, **options):
      assert names, names
  
      directory = {}
      basepos = dbfile.tell()
      dbfile.write_long(0)  # Directory position
      dbfile.write_int(0)  # Directory length
  
      # Copy the files into the compound file
      for name in names:
          if name.endswith(".toc") or name.endswith(".seg"):
              raise Exception(name)
  
      for name in names:
          offset = dbfile.tell()
          length = store.file_length(name)
          modified = store.file_modified(name)
          directory[name] = {
              "offset": offset,
              "length": length,
              "modified": modified,
          }
          f = store.open_file(name)
          copyfileobj(f, dbfile)
          f.close()
  
      CompoundStorage.write_dir(dbfile, basepos, directory, options)
  
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 11 for calling the CompoundStorage obj's underlying member method code with example usage: obj.assemble(dbfile, store, names) without return types