Initializes a data object with the contents of the mapped file specified by a given path.
- iOS 2.0–8.0Deprecated
- macOS 10.0–10.10Deprecated
- tvOS 9.0–9.0Deprecated
- watchOS 2.0–2.0Deprecated
The absolute path of the file from which to read data.
A data object initialized by reading into it the mapped file specified by