/**
 * @interface jibo.face.views.PauseOverlay~PauseOptions
 * @description Interface for pause options.
 * @prop {number} [alpha] - Alpha value for overlay when opened.  Supports values between `0` and `1`.
 * @prop {number} [duration] - Duration in milliseconds of tween, if `0` no tween is used.
 * @prop {String} [type] - Type of tween applied to alpha transition when opening and closing.
 */

    /**
     * Level of opacity for overlay.
     * Supports values between `0` and `1`.
     * @name jibo.face.views.PauseOverlay#alpha
     * @default .7
     * @type {number}
     */

    /**
     * Duration in milliseconds of tween.
     * If `0` no tween is used.
     * @name jibo.face.views.PauseOverlay#duration
     * @default 550
     * @type {number}
     */

    /**
     * Type of tween applied to alpha transition when opening and closing.
     * @name jibo.face.views.PauseOverlay#type
     * @default 'sineOut'
     * @type {string}
     */

    /**
     * Graphic for display overlay.
     * @name jibo.face.views.PauseOverlay#_overlay
     * @type {PIXI.Graphics}
     * @private
     */

    /**
     * Flag set to `true` after open is called, reset to `false` on close.
     * @name jibo.face.views.PauseOverlay#_isOpen
     * @type {boolean}
     * @private
     */

    /**
     * Apply values from options.
     * @method jibo.face.views.PauseOverlay#applyOptions
     * @example
     * {
     *   "alpha": ".7",
     *   "duration": 550,
     *   "type": "sineOut",
     * }
     * @param {jibo.face.views.PauseOverlay~PauseOptions} options - Options for pause.
     * @param {number} [options.alpha] - Level of opacity for overlay.
     * @param {number} [options.duration] - Duration in milliseconds of tween.
     * @param {String} [options.type] - Type of tween applied to alpha transition.
     */

    /**
     * Apply default values.
     * @method jibo.face.views.PauseOverlay#applyDefaults
     */

    /**
     * Open the overlay.
     * Creates PIXI.Graphic and adds to stage.
     * @method jibo.face.views.PauseOverlay#open
     * @param {PIXI.Container} container - Container for the overlay, should be View's stage.
     */

    /**
     * Close the overlay, once closed remove overlay from display.
     * @method jibo.face.views.PauseOverlay#close
     */

    /**
     * Destroy
     * @method jibo.face.views.PauseOverlay#destroy
     */