Add a class key for ProteinInteractionExperiment.
Add a class key for ProteinInteractionExperiment.



Former-commit-id: 734c41f974ffb309933c330a9801e3b669ff6a33
julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine,julie-sullivan/phytomine