How to get a list of contacts from iphone?

How to get a list of contacts from iphone?
Understand the AddressBook API for object-C is fully read / write.
What’s the best way to do it in Unity? Is there a existing plugin?

I found the Object-C codes:ios4 - Get a list of all contacts on iOS - Stack Overflow

But I don’t know how to make it to Unity.

I have used following plugins for contacts in iOS

I can’t say I’m an expert, but I’m not aware of any plugin that can handle that.