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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 set_file(self, file=None, is_modified=False, is_untitled=False):
 """ Sets the editor file. :param File: File to set. :type File: unicode :param is_modified: File modified state. :type is_modified: bool :param is_untitled: File untitled state. :type is_untitled: bool :return: Method success. :rtype: bool """


        LOGGER.debug("> Setting '{0}' editor file.".format(file))
        self.__file = file
        self.__is_untitled = is_untitled
        self.set_modified(is_modified)
        self.set_title()
        return True