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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 _handle_config_update(self, config_m, config_key):
 """Handles changes in config values The method ensure that the correct list stores are updated with the new values. :param ConfigModel config_m: The config model that has been changed :param config_key: The config key who's value has been changed :return: """

        if config_key == "LIBRARY_PATHS":
            self.update_libraries_list_store()
        if config_key == "SHORTCUTS":
            self.update_shortcut_settings()
        else:
            self.update_config_value(config_m, config_key)