* @param string $class The type of the list table, which is the class name.
* @param array $args Optional. Arguments to pass to the class. Accepts 'screen'.
* @return object|bool Object on success, false if the class does not exist.
* @param string $class The type of the list table, which is the class name.
* @param array $args Optional. Arguments to pass to the class. Accepts 'screen'.
* @return object|bool Object on success, false if the class does not exist.