/**
 * The object returned by the TimelineTask. Represents a PIXI animation.
 * @class Timeline
 * @private
 * @memberof jibo.rendering.animation
 */

    /**
     * Adds a texture for the Timeline.
     * @method jibo.rendering.animation.Timeline#addTexture
     * @private
     * @param {PIXI.Texture} texture Texture reference.
     * @param {String} id The id name of texture in cache.
     */

    /**
     * Gets a texture/frame that was loaded for this Timeline
     * @method jibo.rendering.animation.Timeline#getTexture
     * @private
     * @param {String} id The id name of texture in cache.
     * @returns {PIXI.Texture} Texture reference.
     */

    /**
     * Adds shapes to the Timeline.
     * @method jibo.rendering.animation.Timeline#addShapes
     * @private
     * @param {jibo.rendering.animation.Shapes} shapes Texture reference.
     */

    /**
     * Adds spritesheet to the Timeline.
     * @method jibo.rendering.animation.Timeline#addSpritesheet
     * @private
     * @param {jibo.rendering.animation.Spritesheet} spritesheet Spritesheet reference.
     */

    /**
     * Uploads all the textures to the GPU.
     * @method jibo.rendering.animation.Timeline#upload
     * @param {PIXI.WebGLRenderer} renderer Reference to face renderer.
     * @param {Function} callback Callback when complete.
     */

    /**
     * Destroys Timeline object.
     * @method jibo.rendering.animation.Timeline#destroy
     */