code: def addCallSet(self, callSet):
          
          callSetId = callSet.getId()
          self._callSetIdMap[callSetId] = callSet
          self._callSetNameMap[callSet.getLocalId()] = callSet
          self._callSetIds.append(callSetId)
          self._callSetIdToIndex[callSet.getId()] = len(self._callSetIds) - 1
docs: Adds the specfied CallSet to this VariantSet.