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Summary:
This method - (PHImageRequestID)requestImageDataForAsset:(PHAsset *)asset options:(PHImageRequestOptions *)options resultHandler:(void(^)(NSData *imageData, NSString *dataUTI, UIImageOrientation orientation, NSDictionary *info))resultHandler;

does not have a targetSize parameter. This is required when you want the size of the smaller version (2K X 2K) of an image with dimensions let's say 5K X 5K.  In these cases the only option to get the data is by first calling 

- (PHImageRequestID)requestImageForAsset:(PHAsset *)asset targetSize:(CGSize)targetSize contentMode:(PHImageContentMode)contentMode options:(PHImageRequestOptions *)options resultHandler:(void (^)(UIImage *result, NSDictionary *info))resultHandler;

 and then calling UIImageJPEGRepresentation.

Steps to Reproduce:
1. Request data for a specified size of an asset using - (PHImageRequestID)requestImageDataForAsset:(PHAsset *)asset options:(PHImageRequestOptions *)options resultHandler:(void(^)(NSData *imageData, NSString *dataUTI, UIImageOrientation orientation, NSDictionary *info))resultHandler
2. Find there is no targetSize parameter.

Expected Results:
Expecting a target size parameter when retrieving data for PHAsset.

Actual Results:
No target size parameter.

Version:
iOS 8.3

Notes:


Configuration:
iPhone 5S, 16 GB, Wifi