code: def initialize(
      self, path: str, default_filename: Optional[str] = None
  ) -> None:
      super().initialize(path, default_filename)
      mimetypes.add_type("image/webp", ".webp")
  
file_path: streamlit/lib/streamlit/web/server/app_static_file_handler.py
imports: import mimetypes
  import os
  from pathlib import Path
  from typing import Optional
  import tornado.web
  from streamlit.logger import get_logger
label_desc: Use image node_id 1 for calling the AppStaticFileHandler obj's underlying member method code with example usage: obj.initialize(path, default_filename) without return types