private int randInteger(int range) {
        return random.nextInt(range);
    }
RandIntegerFunction  ->  rand_integer(INT1[, INT2])
description:
- Return a pseudorandom integer value in the range [0, 'INT1') if 'INT2' is NULL
- Return a pseudorandom integer value in the range [0, 'INT1') with an initial seed 'INT2'
Note: Two RAND_INTEGER functions will return idential sequences of numbers if they have the same initial seed and bound.
inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/arithmetic/RandIntegerFunction.java