builder.append("{");
Iterator<BundleField> iterator = bundle.iterator();
while (iterator.hasNext()) {
BundleField field = iterator.next();
String fieldName = field.getName();
ValueObject value = bundle.getValue(field);
String formatValue = printValueObject(value);
builder.append("\"");
builder.append(fieldName);
builder.append("\" = ");
builder.append(formatValue);