warning info: `Assigning to 'id<CALayerDelegate> _Nullable' from incompatible type 'FBShimmeringLayer *const __strong'` ``` - (void)_createMaskIfNeeded { if (_shimmering && !_maskLayer) { _maskLayer = [FBShimmeringMaskLayer layer]; _maskLayer.delegate = self; // -> warning here ... _contentLayer.mask = _maskLayer; [self _updateMaskColors]; [self _updateMaskLayout]; } } ```
warning info:
Assigning to 'id<CALayerDelegate> _Nullable' from incompatible type 'FBShimmeringLayer *const __strong'