Use clearer sync DSL for controller.
Use clearer sync DSL for controller.

ajb/sync,henare/sync,ifduyue/sync,angelim/sync,zuyderleven/render_sync,ajb/sync,aruprakshit/sync,ajb/sync,zuyderleven/render_sync,chrismccord/sync,chrismccord/render_sync,chrismccord/sync,chrismccord/sync,aruprakshit/sync,angelim/sync,henare/sync,ifduyue/sync,chrismccord/render_sync,zuyderleven/render_sync,aruprakshit/sync,chrismccord/render_sync,angelim/sync,ifduyue/sync,henare/sync