builder.setType(this.checkpointDocumentType);
builder.setFetchSource(true);
String bucketUUID = null;
GetResponse response;
ListenableActionFuture<GetResponse> laf = builder.execute();
if(laf != null) {
response = laf.actionGet();
if(response.isExists()) {
Map<String,Object> responseMap = response.getSourceAsMap();
bucketUUID = this.getUUIDFromCheckpointDocSource(responseMap);