vp.waitForDocExtraPaneActive("comments");
// Verify and delete the latest version.
HistoryPane historyTab = vp.openHistoryDocExtraPane();
Assert.assertEquals("2.1", historyTab.getCurrentVersion());
historyTab = historyTab.deleteVersion("2.1");
// Verify that the current version is now the previous one.
Assert.assertEquals("1.1", historyTab.getCurrentVersion());
Assert.assertEquals("Administrator", historyTab.getCurrentAuthor());
}