interface SessionBagInterface

interface SessionBagInterface {
    
    /**
     * Gets this bag's name.
     */
    public function getName() : string;
    
    /**
     * Initializes the Bag.
     */
    public function initialize(array &$array) : void;
    
    /**
     * Gets the storage key for this bag.
     */
    public function getStorageKey() : string;
    
    /**
     * Clears out data from bag.
     *
     * @return mixed Whatever data was contained
     */
    public function clear() : mixed;

}