Bulk Assign Apple DEP Profile to multiple iOS devices

Looking for an automated way to assign an Apple DEP Profile to a CSV file containing SerialNumbers (multiple devices).  Also, interested in hearing from customers how they deal with multiple DEP Profiles and assignment of same. 

The script below works for assigning DEP Profile to a single device- 

https://github.com/microsoftgraph/powershell-intune-samples/blob/master/AppleEnrollment/AppleDEPProfile_Assign.ps1