Function: Utility function to check if the data upgrade for Quiz Questions has been run.
@package: Data Upgrades
Method: Return the last run details for the last completed data upgrade for the instance.
Method: Entry point to perform data upgrade for instance.
Method: Initialize the processing timer.
Method: Check if the process timer is out of time.
Method: Remove the processing transient for instance.
Method: Get the processing transient for instance.
Method: Set the processing transient for instance.
Action Hook: Fires on admin data upgrades init
Method: Placeholder function. This function is called when processing the upgrade action.
Function: AJAX function to handle calls from browser on Data Upgrade cycles.
Method: Set the last run completed data upgrade for instance.
Function: No description found
Class: Class to create the Data Upgrade for Courses.
Method: Public constructor for class
Method: Get the current instance of this class or new.
Method: Add instance to static tracking array
Method: Register the data upgrade action.
Method: Initialize the LearnDash Settings array
Method: Get the LearnDash Settings array