# File test/unit/util/observable.rb, line 75
                                def notify_listeners(channel_name, *arguments)
                                        channel = channels[channel_name]
                                        count = 0
                                        unless (channel.nil?)
                                                channel.each_value {
                                                        |callback|
                                                        callback.call(*arguments)
                                                        count += 1
                                                }
                                        end
                                        return count
                                end