in src/main/scala/org/apache/spark/sql/datasketches/kll/aggregate/KllDoublesSketchAggMerge.scala [164:170]
override def deserialize(bytes: Array[Byte]): KllDoublesSketch = {
if (bytes.length > 0) {
KllDoublesSketchType.deserialize(bytes)
} else {
null
}
}