docs: public int compareTo(final Vertex<T> o)
      {
          int orderInd;
  
          if (m_order < o.m_order)
          {
              orderInd = -1;
          }
          else if (m_order > o.m_order)
          {
              orderInd = 1;
          }
          else
          {
              orderInd = 0;
          }
  
          return orderInd;
      }