def print_methods(self):
        """Prints a description of the available API methods.

        This information has been fetched from the CCU before. This might be useful
        for working with the API to gather infos about the available calls.
        """
        with self._api_lock:
            self._initialize()

        line_format = "%-60s %s\n"
        sys.stdout.write(line_format % ("Method", "Description"))

        # Output device API methods
        for method_name_int, method in sorted(self._methods.items()):
            call_txt = "API.%s(%s)" % (method_name_int, ", ".join(method["INT_ARGUMENTS"]))
            sys.stdout.write(line_format % (call_txt, method["INFO"]))