requestUnblurSurface(id) {
    if (id != null) {
      const indexOf = _.lastIndexOf(this._blurSurfaceRequests, id);
      if (indexOf !== -1) {
        const numRequests = this._blurSurfaceRequests.length;
        this._blurSurfaceRequests.splice(indexOf, 1);
        if (numRequests === 1 && this._blurSurfaceRequests.length === 0) {
          this.getEventBus().trigger(EVENTS.blur_surface_stop, { type: EVENTS.blur_surface_stop });
        }
      }
    } else {
      Logger.module('ENGINE').error('FX.requestUnblurSurface -> requires id');
    }
  }
Request unblur of surface/post processed content. Will only stop blur when this is last request.
@param {String|Number|Integer} id