System/Library/PrivateFrameworks/AnnotationKit.framework

AKPolygonAdornmentLayer.h

NSObject
>
CALayer
>
AKAdornmentLayer

@interface AKPolygonAdornmentLayer : AKAdornmentLayer

- (BOOL)needsUpdateWhenDraggingStartsOrEnds;
- (void)updateAdornmentElements;
- (void)updateSublayersWithScale:(double)a0;

@end