Initializes a newly allocated array by placing in it the objects contained in a given array.
- iOS 7.0+
- macOS 10.9+
- tvOS 9.0+
- watchOS 2.0+
- Xcode 6.3+
An array initialized to contain the objects in `anArray``. The returned object might be different than the original receiver.
Discussion: After an immutable array has been initialized in this way, it cannot be modified.