code: def __refresh_categories(self):
      version_info = self.get_version()
      version_info["categories"] = {}
      categories = version_info["categories"]
      response = self.__api_GET(
          "categories",
          paginated=True,
          print_info="Fetching categories for version "
          + self.api_version,
      )
      if response is not None:
          for category in response:
              if category[
                  "reference"
              ]:  # Only get cateories that are in the API reference
                  if category["title"] in categories:
                      print(
                          "Warning: There are two categories with the name "
                          + category["title"]
                          + " for version "
                          + self.api_version
                          + ". Which category this title refers"
                          + " to will be unpredictable."
                      )
                  categories[category["title"]] = category
                  self.__refresh_category_files(category["title"])
  
imports: import json
  import os
  from requests.auth import HTTPBasicAuth
  import requests
label_desc: Use image node_id 11 for calling the ReadMeSession obj's underlying member method code with example usage: obj.__refresh_categories() without return types