Unwind Your Segue | raywenderlich.com

This is a companion discussion topic for the original entry at https://www.raywenderlich.com/16124941-uikit-fundamentals/lessons/17

How does the StoryPromtViewcontroller in storyboard get a pop-up for the IBAction function saveStoryPrompt(unwindSegue: ) when dragging and dropping from “save” button to the “exit” dock item? The saveStoryPrompt(unwindSegue: ) is defined in StoryPromptTableViewController and not StoryPromptViewController. Thanks in advance!