@Override
	synchronized boolean canRedo() {
		if (redoList.size() > 0) {
			for (DomainObjectTransactionManager mgr : domainObjectTransactionManagers) {
				if (mgr.canRedo()) {
					return true;
				}
			}
		}
		return false;
	}
Returns the undo stack depth.
(The number of items on the undo stack)
This method is for JUnits.
@return the undo stack depth
Ghidra/Framework/Project/src/main/java/ghidra/framework/data/SynchronizedTransactionManager.java