presto-main/src/main/java/io/prestosql/operator/aggregation/GenericAccumulatorFactoryBinder.java/GenericAccumulatorFactoryBinder/getStateDescriptors
class GenericAccumulatorFactoryBinder:    @VisibleForTesting
    public List<AccumulatorStateDescriptor> getStateDescriptors()
    {
        return stateDescriptors;
    }