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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_untitled_file_name(self):
 """ Returns an untitled editor file name. :return: Untitled file name. :rtype: unicode """


        name = "{0} {1}.{2}".format(
            self.__default_file_name, Editor._Editor__untitled_name_id, self.default_file_extension)
        Editor._Editor__untitled_name_id += 1
        LOGGER.debug("> Next untitled file name: '{0}'.".format(name))
        return name