@Override
	synchronized String getRedoName() {
		if (transaction == null && redoList.size() > 0) {
			TransactionInfo t = redoList.getLast();
			return t.getDescription();
		}
		return "";
	}
Returns the undo stack depth (The number of items on the undo stack).

<p>
This method is for JUnits.

@return the undo stack depth
Ghidra/Framework/Project/src/main/java/ghidra/framework/data/DomainObjectTransactionManager.java