code: def make_function_value_private(self, value, value_type, function):
          
          # remove quotes
          value = self.remove_quotes(value)
  
          if function == "base64":
              try:
                  import base64
  
                  value = base64.b64decode(value).decode("utf-8")
              except TypeError as e:
                  self.notify_user("base64(..) error %s" % str(e))
  
          # check we are in a module definition etc
          if not self.current_module:
              self.notify_user("%s(..) used outside of module or section" % function)
              return None
  
          module = self.current_module[-1].split()[0]
          if module in CONFIG_FILE_SPECIAL_SECTIONS + I3S_MODULE_NAMES:
              self.notify_user(
                  "%s(..) cannot be used outside of py3status module "
                  "configuration" % function
              )
              return None
  
          value = self.value_convert(value, value_type)
          module_name = self.current_module[-1]
          return PrivateHide(value, module_name)
docs: Wraps converted value so that it is hidden in logs etc.
          Note this is not secure just reduces leaking info
  
          Allows base 64 encode stuff using base64() or plain hide() in the
          config