public void handleRequest(final RestRequest request, final RestChannel channel, final Client client) {
final ExistsRequest existsRequest = new ExistsRequest(Strings.splitStringByCommaToArray(request.param("index")));
existsRequest.indicesOptions(IndicesOptions.fromRequest(request, existsRequest.indicesOptions()));
existsRequest.listenerThreaded(false);
if (request.hasContent()) {
existsRequest.source(request.content(), request.contentUnsafe());
} else {
String source = request.param("source");
if (source != null) {
existsRequest.source(source);
} else {