text: //
  //  LFChalkBrush.h
  //  LFMediaEditingController
  //
  //  Created by TsanFeng Lam on 2019/9/6.
  //  Copyright © 2019 LamTsanFeng. All rights reserved.
  //
  
  #import "LFPaintBrush.h"
  
  NS_ASSUME_NONNULL_BEGIN
  
  @interface LFChalkBrush : LFPaintBrush
  
  @end
  
  NS_ASSUME_NONNULL_END
  