Atomicity of properties on Cocoa

Are properties defined as nonatomic or atomic under Oxygene/RO C# on Cocoa? I’ve looked at the storage modifier options but atomicity isn’t mentioned.

property accessors won’t be locked by default. you can use the “locked” and “locked on X” directives to synchronize access, if needed.

So, the opposite of the default for Cocoa objective-C properties which are atomic.

Nonatomic is usually what you want 95% of the time though so it’s not a big deal.