def restoreJSystemProperties(self):
        if self.userDir is None:
            return

        orig = File(self.userDir, "jsystem.properties")
        back = File(orig.getParentFile(), "jsystem.properties.back")
        FileUtils.copyFile(back, orig)
 def backupJSystemProperties(self):
     self.userDir = self.jsystem.getUserDir()
     orig = File(self.userDir, "jsystem.properties")
     back = File(orig.getParentFile(), "jsystem.properties.back")
     FileUtils.copyFile(orig, back)