    # File lib/phusion_passenger/plugin.rb, line 83
            def call_hook(name, *args, &block)
                    last_result = nil
                    if @instances
                            @instances.each do |instance|
                                    if instance.respond_to?(name.to_sym)
                                            last_result = instance.__send__(name.to_sym, *args, &block)
                                    end
                            end
                    end
                    return last_result
            end