@Override
	void doClose(DomainObjectAdapterDB object) {
		// don't care
	}
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