@Override
            public ResultIterator<U> iterator() {
                return delegate.iterator();
            }
Split the results into per-batch sub-lists. Note that this may not be correct if any of the executed batches returned an error code.

@return results in a {@link List} of {@link List}s.
core/src/main/java/org/jdbi/v3/core/result/BatchResultIterable.java