How to override set_timeout

Hello All,

Please help me :

I have different tests requiring different timeouts, let say:

1. Test1 - timeout 100ns
2. Test2 - timeout 100ms
3. Test3 - timeout 1s

In the test base I have set_timeout(1000ns, 1) , so how to override this timeout from various tests

or any other way to achieve this , unfortunately unable to finad any good example to understand

-Thanks

Karandeep