code: public int getAnalysisBits()
    {
      int bits = 0;
      
      if (m_exprs != null)
      {
        int n = m_exprs.length;
  
        for (int i = 0; i < n; i++)
        {
        	int bit = m_exprs[i].getAnalysisBits();
          bits |= bit;
        }
      }
  
      return bits;
    }
docs: Get the analysis bits for this walker, as defined in the WalkerFactory.
  @return One of WalkerFactory#BIT_DESCENDANT, etc.