Return: Quiz IV in Swift in Swift

Quiz: What would this code produce if we were to copy-paste it in a code editor and run it?

func greetAndReturn() -> String {
    return "How are you doing?"
    print("Hey bro!")
}

func mainFunction() {
    let question = greetAndReturn()
    print(question)
}

Important Note:

Do not use an actual code editor to get the answer! It would defy the whole purpose of the quiz!