#include "RecoVertex/VertexPrimitives/interface/TransientVertex.h"
#include "RecoVertex/VertexPrimitives/interface/VertexException.h"
#include "TrackingTools/TransientTrack/interface/TrackTransientTrack.h"
#include "TrackingTools/TransientTrack/interface/CandidatePtrTransientTrack.h"
#include "FWCore/MessageLogger/interface/MessageLogger.h"
#include <algorithm>