Method: Unserializing instances of this class is forbidden.
Method: Creates or returns an instance of this class.
Method: Placeholder function which is called only once.
Function: Return or print new comment button.
Class: A class to be used as a base for all singleton classes.
Function: Get addon image.
Function: Check if addon has options.
Filter Hook: This hooks can be used to filter existing addons or for adding new addons.
Filter Hook: Filter for overriding is_anspress() return value.
Method: Add comment subscriber.