if (!clazz.isAnnotationPresent(AggregatorSpec.class))
return;
final AggregatorSpec annotation = clazz.getAnnotation(AggregatorSpec.class);
final String type = annotation.type();
if (type.equals("any"))
this.aggregators.put(annotation.name(), clazz);
else
this.aggregators.put(annotation.name() + ":" + type, clazz);
}