Can we add Merge Field Fallback values?

Can we add Merge Field Fallback values?

I can't seem to find documentation on how to create a fallback value for merge fields. For example, if a particular lead does not have a Company Name, I would like the value ${Leads.Company,} to have something like ${Leads.Company, fallback="your company"}

If a Company name does not exist, use this fallback value in its stead.

This is a pretty common feature in most email marketing platforms I have used, and I am frustrated that I have not been able to find documentation on how to use it.

Any ideas appreciated. Thanks in advance.