1. @DomName('AudioContext.close')
  2. @DocsEditable()
  3. @Experimental()
Future close()

Source 

@DomName('AudioContext.close')
@DocsEditable()
@Experimental() // untriaged
Future close() => convertNativePromiseToDartFuture(
    _blink.BlinkAudioContext.instance.close_Callback_0_(this));