Add assertions for the main thread to the public accessors
Add assertions for the main thread to the public accessors

mokagio/Static,eliperkins/Static,meetup/Static,venmo/Static,mokagio/Static,eliperkins/Static,venmo/Static,meetup/Static,colemancda/Static,soffes/Static,colemancda/Static,soffes/Static,carabina/Static,meetup/Static,carabina/Static