# File lib/factory_girl/factory.rb, line 213 213: def callback(name, &block) 214: unless [:after_build, :after_create, :after_stub].include?(name.to_sym) 215: raise InvalidCallbackNameError, "#{name} is not a valid callback name. Valid callback names are :after_build, :after_create, and :after_stub" 216: end 217: @attributes << Attribute::Callback.new(name.to_sym, block) 218: end