Restore Interval method that got lost somehow when transferred from private to public.
Restore Interval method that got lost somehow when transferred from private to public.

broadinstitute/picard,nh13/picard,alecw/picard,broadinstitute/picard,nh13/picard,broadinstitute/picard,nh13/picard,nh13/picard,alecw/picard,annkupi/picard,broadinstitute/picard,annkupi/picard,annkupi/picard,alecw/picard,alecw/picard,broadinstitute/picard,annkupi/picard