message: Rename _pr to personRole
diff: @@ -88,9 +88,9 @@ int Population::size()
  /**
  * Gets the size of a specific segment of the population.
  */
  -int Population::size(PersonRole _pr)
  +int Population::size(PersonRole personRole)
  {
  - return mPopulation[_pr];
  + return mPopulation[personRole];
  }
  