Method countTimes

include/DataSet.h:468–478

      }

      int countTimes(const KeyType &ID) const
      {
        if(!this->checkID(ID))
        {
          return 0;
        }
        else
        {
          return _DataStreams.at(ID).size();
        }
      }

      std::vector<KeyType> getKeysAll() const
      {