 
             print("digestHex: \(digestHex)")
 
-            tester?.stop()
         }
         #endif
 

            }

            afterStart()
            tester?.play()

            let md5state = UnsafeMutablePointer<md5_state_s>.allocate(capacity: 1)
            md5_init(md5state)


            print("samples: \(samples)")

            output = node

            // maximum number of frames the engine will be asked to render in any single render call
            let maximumFrameCount: AVAudioFrameCount = 4_096
