Returns a value of 1 if Instant File Initialization is not enabled.
The following article from Microsoft provides guidance on why this can affect performance and how to fix the issue.
https://docs.microsoft.com/en-us/sql/relational-databases/databases/database-instant-file-initialization
Please note it is now possible to add this permission in during installation.
This check will only run on versions 2016 and above due to the attribute in this DMO being retrospectively added in via certain service packs.