JAVA - How to complete the Ascii2int method below?

/*

*/

import binarytree.*;

/** A program that tests the ascii2int() method. */ public class Ascii2Integer { /** A method that converts a binary tree of integer strings into a binary tree of integers. This method assumes that all of the strings in the input tree contain properly formatted integers. */ public static LinkedBTree ascii2int(BTree btree) {

}

// A simple test case for ascii2int(). public static void main(String[] args) { BTree btree1 = new LinkedBTree<>("1", new LinkedBTree<>("12"), new LinkedBTree<>("123"));

BTree btree2 = ascii2int( btree1 );

System.out.println( btree1 ); BTree2dot.btree2dot(btree1, "btree1"); BTree2png.btree2png("btree1");

System.out.println( btree2 ); BTree2dot.btree2dot(btree2, "btree2"); BTree2png.btree2png("btree2"); } }