TreeSet Generic

interface Treeable<T> 
{
  void insert(T value);       // insert element to the tree
  T min();                    // return minimum element from the tree
  T max();                    // return maximum element from the tree
  boolean isPresent(T value); // check if value is present in the tree 
  boolean Empty();            // check if tree is empty
  int size();                 // return size of the tree
}

class MyTree<T> implements Treeable<T> 
{
  public TreeSet<T> s;
  ...
}