in src/main/java/com/google/solutions/df/log/aggregations/common/fraud/detection/PredictTransform.java [214:224]
public static String emitResult(Iterable<String> records, Integer totalRows) {
StringBuilder builder = new StringBuilder();
builder.append("{\"signature_name\":\"predict\",\"instances\": [");
builder.append("\n");
builder.append(
StreamSupport.stream(records.spliterator(), false).collect(Collectors.joining(",")));
builder.append("\n]}");
LOG.info("Builder Size {}, Rows {}", builder.toString().getBytes().length, totalRows);
return builder.toString();
}