toCameraState method 
    
      
CameraState
toCameraState(
 - CameraContext cameraContext
) 
    
    
  Implementation
  CameraState toCameraState(CameraContext cameraContext) {
  if (this == CaptureMode.photo) {
    return PhotoCameraState.from(cameraContext);
  } else if (this == CaptureMode.video) {
    return VideoCameraState.from(cameraContext);
  } else if (this == CaptureMode.preview) {
    return PreviewCameraState(cameraContext: cameraContext);
  } else if (this == CaptureMode.analysis_only) {
    return PreviewCameraState(cameraContext: cameraContext);
  }
  throw "State not recognized";
}