Is there a method or formula to calculate the Internal Gate resistance of a MOSFET

This information is missing in some of the MOSFET Datasheets and it is hard to calculate the MOSFET Switching losses without this particular information.

I do not want practical methods to test the MOSFET and find the Internal gate resistance.

There are already many articles on it.

This is for a preliminary assesment.

Thanks in Advance!

Regards,

B.Janani