presto-main/src/main/java/io/prestosql/operator/HashCollisionsInfo.java/HashCollisionsInfo/createHashCollisionsInfo
class HashCollisionsInfo:    public static HashCollisionsInfo createHashCollisionsInfo(
            long inputPositionsCount, double hashCollisionsCount, double expectedHashCollisions)
    {
        return new HashCollisionsInfo(
                hashCollisionsCount * inputPositionsCount,
                hashCollisionsCount * hashCollisionsCount * inputPositionsCount,
                expectedHashCollisions * inputPositionsCount);
    }