@package: Activity

Function: Update activity meta set.

Function: Get the latest completed course activity record for the user.

Function: Set the course activity completed record.

Function: Set the lesson activity started record.

Function: Set the lesson activity completed record.

Function: Set the topic activity started record.

Function: Set the topic activity completed record.

Function: Set the lesson activity started record.

Function: Set the quiz activity completed record.

Function: Delete the user activity meta.

Function: Get the earliest course activity record for the user.

Function: Set the step activity started record.

Function: Set the step activity completed record.

Function: Set the course activity started record.

Function: Updates the user activity meta.