message: Wrap helper method in unnamed namespace
diff: #include <sstream>
  +namespace {
  /**
  * Fills population requirements fields in a Structure.
  */
  @@ -23,6 +24,7 @@ static void fillPopulationRequirements(PopulationPool& populationPool, const Pop
  available[0] = std::min(required[0], populationPool.populationAvailable(Population::PersonRole::ROLE_WORKER));
  available[1] = std::min(required[1], populationPool.populationAvailable(Population::PersonRole::ROLE_SCIENTIST));
  }
  +}
  /**
  