code: public List<TimephasedCost> getTimephasedBaselineCost(int index)
     {
        return m_timephasedBaselineCost[index] == null ? null : m_timephasedBaselineCost[index].getData();
     }
docs: Retrieve timephased baseline cost. Note that index 0 represents "Baseline",
  index 1 represents "Baseline1" and so on.
  
  @param index baseline index
  @return timephased work, or null if no baseline is present