Initializes a data object with the data from the location specified by a given URL.
Mac Catalyst 13.0+
The URL from which to read data.
A mask that specifies options for reading the data. Constant components are described in NSDataReadingOptions.
If there is an error reading in the data, upon return contains an error object that describes the problem.
Use this method to convert data:// URLs to NSData objects. You can also use it to read short files synchronously. If you need to read potentially large files, initialize an NSInputStream with inputStreamWithURL:, then read the file incrementally.