int rowCount = 0;
Iterator<? extends Row> expectedsIter = expecteds.iterator();
for (Row actual : actuals) {
Row expected = expectedsIter.next();
int actualWidth = actual.rowType().nFields();
assertEquals("row width", expected.rowType().nFields(), actualWidth);
for (int i = 0; i < actualWidth; ++i) {
checkRowInstance(expected, actual, i, rowCount, actuals, expecteds);
}
if (additionalCheck != null)
additionalCheck.check(actual);