presto-main/src/main/java/io/prestosql/operator/aggregation/builder/SpillableHashAggregationBuilder.java/SpillableHashAggregationBuilder/recordHashCollisions
class SpillableHashAggregationBuilder:    @Override
    public void recordHashCollisions(HashCollisionsCounter hashCollisionsCounter)
    {
        hashCollisionsCounter.recordHashCollision(hashCollisions, expectedHashCollisions);
        hashCollisions = 0;
        expectedHashCollisions = 0;
    }