class AliRsnCutPID: public AliRsnCut

 Default constructor.
 Sets the cut to realistic PID with default weights,
 and defines the 'fMinI' value of the base class as the PID
 to which we want to compare this object.

 Default constructor.
 Sets the cut to realistic PID with default weights,
 and defines the 'fMinI' value of the base class as the PID
 to which we want to compare this object.

 Checks if the passed value (track pT) stays in the
 interval where the detector should be accepted

 Compute the PID weights using the class settings.
 If the argument is an ESD track, customized weights can be computed
 It the argument is a track (ESD or AOD), at least default weights
 can be computed, otherwise, no weights can be defined.
 The return value tells if the operation was successful.

 Combines the weights collected from chosen detectors with the priors
 and gives the corresponding particle with the largest probability,
 in terms of the AliPID particle type enumeration.
 The argument, passed by reference, gives the corresponding probability,
 since the cut could require that it is larger than a threshold.

 If MC is present, retrieve the particle corresponding to the used track
 (using the fRefMC data member) and then return the true particle type
 taken from the PDG code of the reference particle itself, converted
 into the enumeration from AliPID object.

 Cut checker.

 Include a detector for a customized weight computing
 and specify also its eventual threshold and if the detector
 must be used above or below the threshold.
 By default the threshold is zero and detector is always used.