add type signatures- get rid of a compile error
add type signatures- get rid of a compile error

nakaji-dayo/persistent,gbwey/persistent,creichert/persistent,andrewthad/persistent,gbwey/persistent,yesodweb/persistent,gbwey/persistent,mitchellwrosen/persistent,junjihashimoto/persistent,greydot/persistent,andrewthad/persistent,jasonzoladz/persistent,superduper/persistent,jcristovao/persistent,jasonzoladz/persistent,greydot/persistent,psibi/persistent,meteficha/persistent,greydot/persistent,nakaji-dayo/persistent,rdnetto/persistent,mitchellwrosen/persistent,bitemyapp/persistent,pseudonom/persistent,pseudonom/persistent,superduper/persistent,jasonzoladz/persistent,gbwey/persistentold,meteficha/persistent,andrewthad/persistent,mkscrg/persistent,plow-technologies/persistent,paul-rouse/persistent,mkscrg/persistent,erikd/persistent,jcristovao/persistent,rdnetto/persistent,superduper/persistent,naushadh/persistent,nakaji-dayo/persistent,mitchellwrosen/persistent,meteficha/persistent,jcristovao/persistent,mkscrg/persistent,junjihashimoto/persistent,gbwey/persistentold