code: def testWaitForEvent_Time(self):
      for msg in self.capture_messages[3:-1]:
          threading.Timer(
              0.1 * msg.time, self.port.callback, args=[msg]
          ).start()
  
      wait_start = time.time()
  
      self.midi_hub.wait_for_event(timeout=0.3)
      self.assertAlmostEqual(time.time() - wait_start, 0.3, delta=0.01)
  
imports: import collections
  import queue
  import threading
  import time
  from magenta.common import concurrency
  from magenta.interfaces.midi import midi_hub
  import mido
  from note_seq import testing_lib
  from note_seq.protobuf import music_pb2
  import tensorflow.compat.v1
label_desc: Use image node_id 27 for calling the MidiHubTest obj's underlying member method code with example usage: obj.testWaitForEvent_Time() without return types