#include "TrackingTools/GsfTools/interface/MultiGaussianStateTransform.h"
#include "TrackingTools/GsfTools/interface/MultiGaussianState1D.h"
#include "DataFormats/TrackReco/interface/TrackExtraFwd.h"
#include "DataFormats/GsfTrackReco/interface/GsfTrackExtraFwd.h"
#include "TrackingTools/TrajectoryState/interface/TrajectoryStateOnSurface.h"
#include "FWCore/Utilities/interface/Exception.h"