Checks whether a specific template tag handler is registered.
File: src/components/template-tag-handler-manager.php
Template_Tag_Handler_Manager::get()
Gets a registered template tag handler.
Template_Tag_Handler_Manager::unregister()
Unregisters a template tag handler.
Template_Tag_Handler_Manager
Class for managing template tag handlers.
Template_Tag_Handler_Manager::__construct()
Constructor.
Template_Tag_Handler_Manager::register()
Registers a template tag handler.