code: def __refresh_category_files(self, category):
      self.__verify_category_exists(category)
      category_files = self.__api_GET(
          "categories/" + self.get_category(category)["slug"] + "/docs",
          print_info="Fetching docs in " + category,
      )
      # Populate as a map: map<title, info object>>
      category = self.get_category(category)
      category["files"] = {}
      for file in category_files:
          category["files"][file["title"]] = file
  
imports: import json
  import os
  from requests.auth import HTTPBasicAuth
  import requests
label_desc: Use image node_id 12 for calling the ReadMeSession obj's underlying member method code with example usage: obj.__refresh_category_files(category) without return types