Initializes and returns an NSInputStream object that reads data from the file at a given URL.
Original signature is '- (id)initWithURL:(NSURL *)url'
Available in Mac OS X v10.6 and later.
- url (NSURL)
- The URL to the file.
An initialized NSInputStream object that reads data from the file at url. If the file specified by url doesn’t exist or is unreadable, returns nil.
- Available in Monobjc Bridge: 10.6 (For Mac OS X 10.6 and later)