@Override
	public void fixupInstructions(Program program, Language oldLanguage, TaskMonitor monitor)
			throws Exception, CancelledException {
		if (postUpgradeInstructionHandlerClass != null) {
			LanguagePostUpgradeInstructionHandler postUpgradeInstructionHandler =
				getPostUpgradeInstructionHandler(program, postUpgradeInstructionHandlerClass);
			postUpgradeInstructionHandler.fixupInstructions(oldLanguage, monitor);
		}
	}
<code>SimpleLanguageTranslator</code> provides a simple translator which
derives its mappings from an XML translation specification file.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/util/SimpleLanguageTranslator.java