@!visibility private
# File lib/concurrent/edge/future.rb, line 459 def reason raise NotImplementedError end
# File lib/concurrent/edge/future.rb, line 447 def result [success?, value, reason] end
# File lib/concurrent/edge/future.rb, line 451 def success? raise NotImplementedError end
# File lib/concurrent/edge/future.rb, line 455 def value raise NotImplementedError end