presto-main/src/main/java/io/prestosql/operator/aggregation/arrayagg/SingleArrayAggregationState.java/SingleArrayAggregationState/getEstimatedSize
class SingleArrayAggregationState:    @Override
    public long getEstimatedSize()
    {
        long estimatedSize = INSTANCE_SIZE;
        if (blockBuilder != null) {
            estimatedSize += blockBuilder.getRetainedSizeInBytes();
        }
        return estimatedSize;
    }