SceneKit watchOS 5.0 Beta 4 to Beta 5 API Differences
SCNPhysicsBody.h
Removed
SCNPhysicsBody.linearSleepingThreshold
Removed
SCNPhysicsBody.angularSleepingThreshold
Added
SCNPhysicsBody.linearRestingThreshold
Added
SCNPhysicsBody.angularRestingThreshold