def visitor = new CollectingChangeVisitor()
        strategy.visitChangesSince(previousFingerprint, currentFingerprint, "test", visitor)
        visitor.getChanges().toList()
    }

    def fingerprint(String normalizedPath, def hashCode = 0x1234abcd) {

            FileSystemLocationFingerprint previousFingerprint = entry.getKey();
            FilePathWithType pathWithType = entry.getValue();

            Change change = getChange(propertyTitle, addedFilesByNormalizedPath, previousFingerprint, pathWithType);
            if (!visitor.visitChange(change)) {
                return false;
            }
        }