How to create an animation in Maya that works in SceneKit or ARKit

How to create an animation in Maya that works in SceneKit or ARKit

Please note that the following methodology is for iOS 11.4 and Swift 4.1.

Source: medium.com/ar-tips-and-tricks/how-to-create-an-animation-in-maya-and-make-it-work-in-scenekit-or-arkit-477333e5503c