Creates and initializes a descriptor for an Apple event record whose data has yet to be set.
- macOS 10.0+
An Apple event descriptor whose data has yet to be set, or
nil if an error occurs.
An Apple event record is a descriptor whose data is a set of descriptors keyed by four-character codes. You can add information to the descriptor with methods such as
Invoking this method is equivalent to allocating an instance of
NSApple and invoking