text: /*
  * This header is generated by classdump-dyld 1.0
  * on Saturday, June 1, 2019 at 6:42:56 PM Mountain Standard Time
  * Operating System: Version 12.1.1 (Build 16C5050a)
  * Image Source: /System/Library/Frameworks/AudioToolbox.framework/AudioToolbox
  * classdump-dyld is licensed under GPLv3, Copyright © 2013-2016 by Elias Limneos.
  */
  
  
  @interface _AUParameterTreeObserver : NSObject {
  
  	/*^block*/id _callback;
  
  }
  
  @property (nonatomic,copy) id callback;              //@synthesize callback=_callback - In the implementation block
  -(void)setCallback:(id)arg1 ;
  -(id)callback;
  -(void)dealloc;
  -(void)observeValueForKeyPath:(id)arg1 ofObject:(id)arg2 change:(id)arg3 context:(void*)arg4 ;
  @end
  
  