/**
 * Class that represents a loaded or loading item, enabling strict unloading policies.
 * @class AssetToken
 * @memberof jibo.loader
 */

    /**
     * Name of the named cache that this load was attached to.
     * @type {string}
     * @name jibo.loader.AssetToken#cache
     * @readonly
     */

    /**
     * Unique id within the named cache that this load was attached to.
     * @type {string}
     * @name jibo.loader.AssetToken#id
     * @readonly
     */

    /**
     * Globally unique key used to cache this load.
     * @type {string}
     * @name jibo.loader.AssetToken#key
     * @readonly
     */

    /**
     * The AssetCache that this token will use to unload a loaded asset.
     * @private
     */

    /**
     * The loader that this token will use to cancel a load.
     * @private
     */

    /**
     * If this token is valid. Tokens that have been unloaded are invalid.
     * @type {boolean}
     * @name jibo.loader.AssetToken#isValid
     * @readonly
     */

    /**
     * @private
     */

    /**
     * Cancels any ongoing load (if still being loaded) and removes this load from the cache.
     * @method jibo.loader.AssetToken#unload
     */

    /**
     * Alias for unload()
     * @method jibo.loader.AssetToken#cancel
     * @see jibo.loader.AssetToken#unload
     */