Creates a dictionary that is in reply to the given dictionary.
- macOS 10.7+
The original dictionary that is to be replied to.
The new dictionary object. NULL if the dictionary did not come from the wire with a reply context.
After completing successfully on a dictionary, this method may not be called again on that same dictionary. Attempts to do so will return NULL.
When this dictionary is sent across the reply connection, the remote end's reply handler is invoked.