private void notifyEndTransaction() {
		for (DomainObjectTransactionManager mgr : domainObjectTransactionManagers) {
			mgr.notifyEndTransaction();
		}
	}
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