Minor fix in Oliver's sample JpaEntityManageService test. It was working as is when committed, since there was only one dataset and one datasetversion in the throwaway database. #11405

Author: landreev

src/test/java/edu/harvard/iq/dataverse/export/HugeDatasetExportPerformanceIT.java

@@ -60,7 +60,7 @@ static void setUp() {
 
     @Test
     void shouldExportLargeDataset() {
-        Long datasetVersionId = regularFilesDataset.getId();
+        Long datasetVersionId = regularFilesDataset.getVersions().get(0).getId();
 
         QueryCountHolder.clear();
         Instant start = Instant.now();