Hello,
The issue description mentioned that issue is in "HashTree class". When I
compile that class (HashTree.java) I got compile time errors as following,
HashTree.java:975:error: cannot find symbol
public void traverse<HashTreeTraverser visitor> {
symbol: class HashTreeTraverser
location: class HashTree
HashTree.java:1019: error : cannot find symbol
private static class TreeSearcher implements HashTreeTraverser {
symbol: class HashTreeTraverser
location: class HashTree
HashTree.java: 1034: error: method does not override or implement from a
supertype
@Override
