Force refreshing ticket near expiration?

**Is your feature request related to a problem? Please describe.**
So currently as I am experimenting the ticket expiration is always the same even if you call renew/authenticate and getserviceticket multiple times. This makes me wonder what would happen if at the edge of expiration kerberos ticket is retrieved but used in the request a second after it has expired (due to just some delay).

**Describe the solution you'd like**
To avoid this I would like to force refresh/generate new ticket that would have new expiration.

**Describe alternatives you've considered**
I couldn't get this to happen any other way except when creating new instance of the KerberosClient. I obviously could just add some sleep if I can see that the ticket is about to expire, but that is not ideal.

Is this already possible in some way or maybe the usage of kerberos is incorrect here?