code: def create_serving_demo_py(self):
      template_file = open(
          os.path.join(TMPL_DIR, "serving_demo.tmpl"),
          "r",
          encoding="utf-8",
      )
      tmpl = Template(template_file.read())
      lines = []
  
      lines.append(tmpl.substitute(MODULE_NAME=self.module))
      self.serving_file = os.path.join(self._tmp_dir, SERVING_FILE)
      with open(self.serving_file, "w", encoding="utf-8") as fp:
          fp.writelines(lines)
  
file_path: PaddleHub/paddlehub/commands/convert.py
imports: import argparse
  import os
  import time
  import tarfile
  import shutil
  from string import Template
  from paddlehub.env import TMP_HOME
  from paddlehub.commands import register
  from paddlehub.utils.xarfile import XarFile
  from paddlehub.server.server import CacheUpdater
label_desc: Use image node_id 5 for calling the ConvertCommand obj's underlying member method code with example usage: obj.create_serving_demo_py() without return types