@Override
	public DataTypeManager openArchive(DomainFile domainFile, TaskMonitor monitor)
			throws VersionException, CancelledException, IOException, DuplicateIdException {
		DataTypeArchive archive = openArchive(domainFile);
		return archive.getDataTypeManager();
	}
Create the actions for the menu on the tool.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/datamgr/DataTypeManagerPlugin.java