add asserts in CallEvent
add asserts in CallEvent

lwahlmeier/avian,joshuawarner32/avian,dicej/avian,ucdseniordesign/avian,bgould/avian,joshuawarner32/avian,MaartenR/avian,dicej/avian,MaartenR/avian,marcinolawski/avian,bigfatbrowncat/avian-pack.avian,bgould/avian,bigfatbrowncat/avian-pack.avian,minor-jason/avian,dicej/avian,marcinolawski/avian,ucdseniordesign/avian,lostdj/avian,marcinolawski/avian,bigfatbrowncat/avian-pack.avian,minor-jason/avian,joshuawarner32/avian,lwahlmeier/avian,marcinolawski/avian,bgould/avian,MaartenR/avian,lostdj/avian,minor-jason/avian,lwahlmeier/avian,minor-jason/avian,lostdj/avian,ucdseniordesign/avian,MaartenR/avian,bigfatbrowncat/avian-pack.avian,lwahlmeier/avian,lostdj/avian,bgould/avian,ucdseniordesign/avian,dicej/avian,joshuawarner32/avian