@Override
public Row next() {
if (rowCounter != 0) {
return null;
}
return new ValuesRow(rowType,
getJMXAttribute(mbeanName, "AcceptedCount"),
getJMXAttribute(mbeanName, "RefusedCount"),
getJMXAttribute(mbeanName, "PerformedCount"),
getJMXAttribute(mbeanName, "ErrorCount"),
getJMXAttribute(mbeanName, "EnqueuedCount"),