void domainObjectRestored(DataTypeManagerDomainObject domainObject) {
		DataTypeManager dataTypeManager = domainObject.getDataTypeManager();
		if (dataTypeManager != programDataTypesManager) {
			return; // Ignore since not our program data type manager.
		}
		if (recentlyUsedDataType != null &&
			recentlyUsedDataType.getDataTypeManager() == programDataTypesManager) {
			recentlyUsedDataType = programDataTypesManager.getDataType(recentlyUsedDtId);
		}

		notifyListeners();
	}
Get the KeyStroke for the most recently used.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/datamgr/DataTypePropertyManager.java