class AliForwardUtil: public TObject

 Do something here when we switch to git - sigh!

 Parse a collision system spec given in a string.   Known values are

  - "ppb", "p-pb", "pa", "p-a"  which returns kPPb
  - "pp", "p-p"                 which returns kPP
  - "PbPb", "Pb-Pb", "A-A",     which returns kPbPb
  - Everything else gives kUnknown

 Parameters:
    sys Collision system spec

 Return:
    Collision system id

 Get a string representation of the collision system

 Parameters:
    sys  Collision system
 - kPP -> "pp"
 - kPbPb -> "PbPb"
 - anything else gives "unknown"

 Return:
    String representation of the collision system

 Calculate the center of mass energy given target/projectile
 mass and charge numbers

 Calculate the center of mass rapidity (shift) given target/projectile
 mass and charge numbers

 Parse the center of mass energy given as a float and return known
 values as a unsigned integer

 Parameters:
    sys   Collision system (needed for AA)
    beam  Center of mass energy * total charge

 Return:
    Center of mass energy per nucleon

 Get a string representation of the center of mass energy per nuclean

 Parameters:
    cms  Center of mass energy per nucleon

 Return:
    String representation of the center of mass energy per nuclean

 Parse the magnetic field (in kG) as given by a floating point number

 Parameters:
    field  Magnetic field in kG

 Return:
    Short integer value of magnetic field in kG

 Get a string representation of the magnetic field

 Parameters:
    field Magnetic field in kG

 Return:
    String representation of the magnetic field

 Check if AOD is the output event

 Get max R of ring

 Optimized version that has a cache

 Calculate eta from strip with vertex (redundant with
 AliESDFMD::Eta but support displaced vertices)

 Slightly more optimized version that uses less branching

 Calculate eta from strip with vertex (redundant with
 AliESDFMD::Eta but support displaced vertices)

 Custom vertex axis that will include satellite vertices
 Satellite vertices are at k*37.5 where k=-10,-9,...,9,10
 Nominal vertices are usually in -10 to 10 and we should have
 10 bins in that range.  That gives us a total of

   10+10+10=30 bins

 or 31 bin boundaries

   * Get the standard color for a ring
   *
   * @param d Detector
   * @param r Ring
   *
   * @return

     * Assignement operator
     *
     * @return Reference to this

   * Constructor

   * Copy constructor
   *
   * @param o Object to copy from