"\nREPTree\n============\n" + m_Tree.toString(0) + "\n" +
"\nREPTree\n============\n" + m_Tree.toString(0, null) + "\n" +
  public String toString() {        return           "\nREPTree\n============\n" + m_Tree.toString(0) + "\n" +      "\nSize of the tree : " + numNodes();  }