code: def get_file_url(self, key, method="GET"):
      raise NotImplementedError("Not implemented: get_file_url")
  
imports: import os
  import uuid
  import time
  from typing import Dict
  from studio.storage.storage_type import StorageType
  from studio.util.util import get_temp_filename, check_for_kb_interrupt
label_desc: Use image node_id 7 for calling the StorageHandler obj's underlying member method code with example usage: obj.get_file_url(key, method) without return types