Merge remote-tracking branch 'origin/GP-3521_ghidragon_allow_user_to_see_and_pick_older_undos_or_redos--SQUASHED'

Ghidra/Features/VersionTracking/src/main/java/ghidra/feature/vt/api/util/EmptyVTSession.java

@@ -307,8 +307,8 @@ public class EmptyVTSession implements VTSession {
 	}
 
 	@Override
-	public void saveToPackedFile(File outputFile, TaskMonitor monitor) throws IOException,
-			CancelledException {
+	public void saveToPackedFile(File outputFile, TaskMonitor monitor)
+			throws IOException, CancelledException {
 		// do nothing
 	}
 
@@ -372,6 +372,16 @@ public class EmptyVTSession implements VTSession {
 		// do nothing
 	}
 
+	@Override
+	public List<String> getAllRedoNames() {
+		return Collections.emptyList();
+	}
+
+	@Override
+	public List<String> getAllUndoNames() {
+		return Collections.emptyList();
+	}
+
 	@Override
 	public void removeTransactionListener(TransactionListener listener) {
 		// do nothing