API- how to check whether a model is saved with using  ZoomToFit option

Hi,

Can anyone let me know how to check/find out a part model is saved using zoom to fit option. Model should be completely visible before saving the file.

I could not able to find any api references for the same.

It will be very helpful if anyone provides a code snippet or some hints on  how to achieve it through a macro

Thanks and Regards,

Mahadev