@Override
	public ProgramUserData getProgramUserData() {
		if (programUserData == null) {
			try {
				programUserData = new ProgramUserDataDB(this);
			}
			catch (IOException e) {
				dbError(e);
			}
		}
		return programUserData;
	}
Initialize program compiler specification.
During a language upgrade this will provide a temporary spec until setLanguage is complete.
@throws CompilerSpecNotFoundException if the compiler spec cannot be found
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/ProgramDB.java