Reads data representing a file’s contents from the receiver and returns it as a file wrapper.
- macOS 10.0+
A file wrapper containing the pasteboard data, or
nil if the receiver contained no data of type
In OS X v10.5 and earlier, the file contents pboard type allowed you to synthesize a pboard type for a file's contents based on the file's extension. In macOS 10.5 and later, using the UTI of a file to represent its contents now replaces this functionality.