1. @DomName('CanvasRenderingContext2D.clearHitRegions')
  2. @DocsEditable()
  3. @Experimental()
void clearHitRegions()

Source 

@DomName('CanvasRenderingContext2D.clearHitRegions')
@DocsEditable()
@Experimental() // untriaged
void clearHitRegions() => _blink.BlinkCanvasRenderingContext2D.instance
    .clearHitRegions_Callback_0_(this);