Update tagging array qmtest including mctruth infos

Update the test_davinci_tupling_array_taggers qmtest adding a few lines showing how to store the mctruth information related to the extra particles in the event, beside the ones in the decay chain. In order to retrieve correctly the mctruth information, the input file has changed and the reference has been updated accordingly.

Two default values has to be defined in order to ensure a valid result if the functor's output is empty:

• in case of functors returning an integer/bool or an array of integers/bools, as TRUEID or TagTr_TRUEID[nTags];
• inside the MAP_INPUT_ARRAY when the inner functor is defined via lambda function, as MCTRUTH_pions.
  For example:

        "TagTr_TRUEID[nTags]":
        F.VALUE_OR([0]) @ F.MAP_INPUT_ARRAY(
            Functor=F.VALUE_OR(0) @ MCTRUTH_pions(F.PARTICLE_ID),
            Relations=tagAlg_rels),

Needs Rec!3139 (merged).

DaVinciExamples/python/DaVinciExamples/tupling/option_davinci_tupling_array_taggers.py

@@ -61,6 +61,8 @@ def main(options: Options):
     MCTRUTH_pions = lambda func: F.MAP_INPUT(Functor=func, Relations=mctruth_pions.MCAssocTable)
 
     #make collection of functors
+    #N.B: a default value has to be defined for functors returning an integer (or an array
+    #of integers) in case the output is empty: e.g. "TRUEID" or "TagTr_TRUEKEY[nTags]".
     variables_B = FC({
         'THOR_MASS':
         F.MASS,
@@ -77,6 +79,9 @@ def main(options: Options):
         F.MAP_INPUT_ARRAY(Functor=F.PT, Relations=tagAlg_rels),
         "TagTr_PHI[nTags]":
         F.MAP_INPUT_ARRAY(Functor=F.PHI, Relations=tagAlg_rels),
+        #N.B.: an additional default value has to be added in the definition of 
+        #MAP_INPUT_ARRAY in case of internal functors built via lambda functions 
+        #in order to ensure that a valid output is always defined, e.g. MCTRUTH_pions.
         "TagTr_TRUEID[nTags]":
         F.VALUE_OR([0]) @ F.MAP_INPUT_ARRAY(
             Functor=F.VALUE_OR(0) @ MCTRUTH_pions(F.PARTICLE_ID),