Generating a random number

It is not so obvious thing - generating random numbers in AX. I found 3 different ways to do that:

1. Kernel class Random (not visible in AOT). Generates a value in the range [0..32767] by calling nextInt() instance method.
2. Class RandomGenerate (which extends Random class). Generates a value in the specified range by calling randomInt() instance method.
3. xGlobal::randomPositiveInt32() method. Generates a value in the range [0..2147483647].
   

Actually, the third way seems to be the most preferable because there is some trick with first two ones. If the new Random class instance will be created each time before calling nextInt(), the output values will be very far from random. For example, the following code:
static void testRandom(Args _args)
{
    Random random;
    int i;

    for (i = 0; i < 3; i++)
    {
        random = new Random();
        info(int2str(random.nextInt()));
    }
}
On the first run will give the following output:
30800
30800
30800
And on the second run:
30810
30810
30810