in src/main/java/com/amazon/checkerframework/checker/data_classification/DataClassificationAnnotatedTypeFactory.java [179:185]
private boolean isPolyWithArgs(final AnnotationMirror a1) {
if (a1 != null && AnnotationUtils.areSameByClass(a1, PolyClassification.class)) {
String arg = AnnotationUtils.getElementValue(a1, "value", String.class, true);
return !"".equals(arg);
}
return false;
}