jsonWriter.key("LastEvaluatedKey").object();
for (String keyName : queryResult.getLastEvaluatedKey().keySet()) {
jsonWriter.key(keyName).object();
AttributeValue keyAttrValue = queryResult.getLastEvaluatedKey().get(keyName);
if (keyAttrValue.getN() != null) {
jsonWriter.key("N").value(keyAttrValue.getN());
} else if (keyAttrValue.getS() != null) {
jsonWriter.key("S").value(keyAttrValue.getS());
} else if (keyAttrValue.getNS() != null) {
jsonWriter.key("NS").value(keyAttrValue.getNS());
} else if (keyAttrValue.getSS() != null) {