Update Mutation API
Update Mutation API

Reviewed By: leebyron

Differential Revision: D4968748

fbshipit-source-id: 35093d3701b284c1c7892aa9172dc88636d97dbb

facebook/relay,benjaminogles/relay,voideanvalue/relay,zpao/relay,facebook/relay,chentsulin/relay,voideanvalue/relay,benjaminogles/relay,zpao/relay,atxwebs/relay,josephsavona/relay,yungsters/relay,chirag04/relay,wincent/relay,xuorig/relay,cpojer/relay,apalm/relay,cpojer/relay,freiksenet/relay,chirag04/relay,cpojer/relay,atxwebs/relay,kassens/relay,xuorig/relay,atxwebs/relay,freiksenet/relay,kassens/relay,rosskevin/relay,kassens/relay,wincent/relay,yungsters/relay,dbslone/relay,chentsulin/relay,zpao/relay,atxwebs/relay,voideanvalue/relay,facebook/relay,rosskevin/relay,iamchenxin/relay,dbslone/relay,cpojer/relay,wincent/relay,xuorig/relay,xuorig/relay,wincent/relay,chirag04/relay,apalm/relay,kassens/relay,facebook/relay,iamchenxin/relay,wincent/relay,chentsulin/relay,facebook/relay,kassens/relay,iamchenxin/relay,benjaminogles/relay,yungsters/relay,voideanvalue/relay,josephsavona/relay,kassens/relay,voideanvalue/relay,apalm/relay,xuorig/relay,josephsavona/relay,voideanvalue/relay,iamchenxin/relay,facebook/relay,wincent/relay,xuorig/relay,freiksenet/relay