code: public final boolean sameNodeAs(Node other)
    {
  
      if (!(other instanceof DTMNodeProxy))
        return false;
  
      DTMNodeProxy that = (DTMNodeProxy) other;
  
      return this.dtm == that.dtm && this.node == that.node;
    }
docs: FUTURE DOM: Test node identity, in lieu of Node==Node
  
  @param other
  
  @return true if the given node has the same handle as this node.