Method: Pre fetch post contents and append to object.
Method: Pre fetch comments and append data to object.
Method: Prefetch actors user object.
Method: Prefetch notification reputations.
Method: Return verb arguments.
Method: Include current item template.
Method: Set up the current notification inside the loop.
Class: User notification query Query wrapper for fetching notifications.
Method: Get notification reference type.
Method: Get the permalink of notification based on ref_id and ref_type.