This is a yielding function. When called, it will pause the Lua thread that called the function until a result is ready to be returned, without interrupting other scripts.
This member can only be accessed by CoreScripts. Attempting to access this member outside of a CoreScript will cause an error.
Prompts the user to import a CSV file, and yields until the prompt has been closed.
If successful, the CSV file will be imported into the `LocalizationService` as a `LocalizationTable`.