message: Add AliAODEvent::GetPrimaryVertexTracks() alias to GetVertex(0)
diff: @@ -188,7 +188,7 @@ public:
  virtual AliAODVertex *GetPrimaryVertexSPD() const;
  virtual AliAODVertex *GetVertex() const { return GetPrimaryVertexSPD(); }
  virtual AliAODVertex *GetPrimaryVertexTPC() const;
  -
  + virtual AliAODVertex *GetPrimaryVertexTracks() const {return GetVertex(0);}
  // -- Pileup vertices
  Int_t GetNumberOfPileupVerticesTracks() const;
  Int_t GetNumberOfPileupVerticesSPD() const;
  