def METHOD_NAME(self, target, current):
    if current is None:
        config = self._settings.global_get(["devel", "virtualPrinter"])
        if config:
            self._logger.info(
                "Migrating settings from devel.virtualPrinter to plugins.virtual_printer..."
            )
            self._settings.global_set(
                ["plugins", "virtual_printer"], config, force=True
            )
            self._settings.global_remove(["devel", "virtualPrinter"])