@Override
	public void programReady(OpenMode openMode, int currentRevision, TaskMonitor monitor)
			throws IOException, CancelledException {
		if (openMode == OpenMode.UPGRADE) {
			upgradeOldFallThroughMaps(monitor);
		}
	}
Set the program after all the managers have been created.
@param program The program object that this manager belongs to.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/code/CodeManager.java