CameraBehaviourChange constructor
      const
      CameraBehaviourChange({ 
    
    
- required CameraBehaviour newBehaviour,
- CameraBehaviourChangeReason changeReason = CameraBehaviourChangeReason.application,
Implementation
const CameraBehaviourChange({
  required this.newBehaviour,
  this.changeReason = CameraBehaviourChangeReason.application
});