public synchronized void setMaxUndos(int maxUndos) {
		bufferMgr.setMaxUndos(maxUndos);
		cacheChangedState();
	}
Set the maximum number of undo transaction checkpoints maintained by the
underlying buffer manager.
@param maxUndos maximum number of undo checkpoints.  An illegal 
value restores the default value.
Ghidra/Framework/DB/src/main/java/db/DBHandle.java