How do I write dispatch_after GCD in Swift 3?

In Swift 2, I was able to use dispatch_after to delay an action:

var dispatchTime: dispatch_time_t = dispatch_time(DISPATCH_TIME_NOW, Int64(0.1 * Double(NSEC_PER_SEC))) 
dispatch_after(dispatchTime, dispatch_get_main_queue(), { 
    // your function here 
})

But this no longer seems to compile in Swift 3. What is the preferred way to write this in Swift 3 (using the new Dispatch API)?