docs: def _windows_system_appdata():
      """
      Return the path to the Windows Common App Data folder.
      On Windows 7, for example, this is C:\\ProgramData
  
      :return: String reprsentation the path to the Windows Common
               App Data folder
      """
      # Could also use os.environ['ALLUSERSPROFILE'] - maybe?
      csidl_common_appdata = 35
      sh_get_folder_path = windll.shell32.SHGetFolderPathW
      sh_get_folder_path.argtypes = [wintypes.HWND,
                                     ctypes.c_int,
                                     wintypes.HANDLE,
                                     wintypes.DWORD,
                                     wintypes.LPCWSTR]
      path_buf = ctypes.create_unicode_buffer(wintypes.MAX_PATH)
      result = sh_get_folder_path(0, csidl_common_appdata, 0, 0, path_buf)
      return str(path_buf.value)