Fix for long_oligo source - set the sequence class name.
Fix for long_oligo source - set the sequence class name.



Former-commit-id: 4f819478b9c98250591b9e428b47e43785ffefbb
julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine