text: #ifndef DataFormats_BTauReco_VertexTypes_h
  #define DataFormats_BTauReco_VertexTypes_h
  
  #include <string>
  
  namespace reco {
    namespace btag {
      namespace Vertices {
        /** Type of secondary vertex found in jet:
       *  - RecoVertex   : a secondary vertex has been fitted from
       *                   a selection of tracks
       *  - PseudoVertex : no RecoVertex has been found but tracks
       *                   with significant impact parameter could be
       *                   combined to a "pseudo" vertex
       *  - NoVertex     : neither of the above attemps were successfull
       *  - NotDefined   : if anything went wrong, set to this value
       */
        enum VertexType { RecoVertex = 0, PseudoVertex = 1, NoVertex = 2, UndefVertex = 99 };
  
        /**
       *  convenience functions that return descriptive strings, rather than
       *  integral types
       */
        std::string name(VertexType);
        VertexType type(const std::string&);
      }  // namespace Vertices
    }    // namespace btag
  }  // namespace reco
  
  #endif
  