Use ErrorType as a sentinel type rather than Optional<Type>
Use ErrorType as a sentinel type rather than Optional<Type>

gregomni/swift,nathawes/swift,shajrawi/swift,jckarter/swift,aschwaighofer/swift,gribozavr/swift,shajrawi/swift,xedin/swift,xwu/swift,airspeedswift/swift,xedin/swift,stephentyrone/swift,gregomni/swift,gregomni/swift,benlangmuir/swift,shajrawi/swift,stephentyrone/swift,rudkx/swift,jmgc/swift,shahmishal/swift,airspeedswift/swift,roambotics/swift,CodaFi/swift,CodaFi/swift,gregomni/swift,benlangmuir/swift,parkera/swift,rudkx/swift,glessard/swift,sschiau/swift,shajrawi/swift,hooman/swift,apple/swift,roambotics/swift,glessard/swift,atrick/swift,CodaFi/swift,gribozavr/swift,stephentyrone/swift,ahoppen/swift,xedin/swift,allevato/swift,hooman/swift,rudkx/swift,rudkx/swift,atrick/swift,aschwaighofer/swift,stephentyrone/swift,karwa/swift,jmgc/swift,tkremenek/swift,benlangmuir/swift,gribozavr/swift,jmgc/swift,apple/swift,glessard/swift,nathawes/swift,jckarter/swift,airspeedswift/swift,devincoughlin/swift,karwa/swift,allevato/swift,JGiola/swift,hooman/swift,hooman/swift,ahoppen/swift,lorentey/swift,nathawes/swift,aschwaighofer/swift,stephentyrone/swift,benlangmuir/swift,allevato/swift,aschwaighofer/swift,gregomni/swift,harlanhaskins/swift,harlanhaskins/swift,jmgc/swift,tkremenek/swift,airspeedswift/swift,parkera/swift,tkremenek/swift,JGiola/swift,airspeedswift/swift,roambotics/swift,parkera/swift,gribozavr/swift,aschwaighofer/swift,jckarter/swift,roambotics/swift,xwu/swift,gribozavr/swift,sschiau/swift,ahoppen/swift,glessard/swift,lorentey/swift,shahmishal/swift,parkera/swift,tkremenek/swift,harlanhaskins/swift,atrick/swift,jckarter/swift,sschiau/swift,devincoughlin/swift,hooman/swift,parkera/swift,karwa/swift,ahoppen/swift,allevato/swift,CodaFi/swift,parkera/swift,hooman/swift,glessard/swift,lorentey/swift,aschwaighofer/swift,rudkx/swift,devincoughlin/swift,shahmishal/swift,gregomni/swift,xedin/swift,shahmishal/swift,sschiau/swift,harlanhaskins/swift,JGiola/swift,apple/swift,lorentey/swift,atrick/swift,allevato/swift,shahmishal/swift,atrick/swift,harlanhaskins/swift,xwu/swift,jmgc/swift,aschwaighofer/swift,devincoughlin/swift,harlanhaskins/swift,sschiau/swift,shajrawi/swift,devincoughlin/swift,gribozavr/swift,xwu/swift,shajrawi/swift,gribozavr/swift,karwa/swift,stephentyrone/swift,sschiau/swift,CodaFi/swift,ahoppen/swift,xedin/swift,sschiau/swift,parkera/swift,shahmishal/swift,devincoughlin/swift,rudkx/swift,shahmishal/swift,karwa/swift,stephentyrone/swift,xwu/swift,JGiola/swift,apple/swift,sschiau/swift,karwa/swift,nathawes/swift,benlangmuir/swift,tkremenek/swift,devincoughlin/swift,devincoughlin/swift,xwu/swift,nathawes/swift,shajrawi/swift,airspeedswift/swift,tkremenek/swift,JGiola/swift,allevato/swift,xedin/swift,ahoppen/swift,karwa/swift,airspeedswift/swift,karwa/swift,nathawes/swift,xedin/swift,xedin/swift,allevato/swift,jckarter/swift,apple/swift,nathawes/swift,lorentey/swift,gribozavr/swift,jmgc/swift,CodaFi/swift,lorentey/swift,jckarter/swift,lorentey/swift,roambotics/swift,harlanhaskins/swift,lorentey/swift,shajrawi/swift,atrick/swift,roambotics/swift,hooman/swift,benlangmuir/swift,parkera/swift,apple/swift,xwu/swift,JGiola/swift,tkremenek/swift,CodaFi/swift,jmgc/swift,glessard/swift,jckarter/swift,shahmishal/swift