How to use the @here/harp-utils.MathUtils.min2 function in @here/harp-utils

updateMinMaxZoomLevelsFromPoiInfo() {
        if (this.poiInfo !== undefined) {
            if (this.minZoomLevel === undefined) {
                this.minZoomLevel = MathUtils.min2(
                    this.poiInfo.iconMinZoomLevel,
                    this.poiInfo.textMinZoomLevel
                );
            }
            if (this.maxZoomLevel === undefined) {
                this.maxZoomLevel = MathUtils.max2(
                    this.poiInfo.iconMaxZoomLevel,
                    this.poiInfo.textMaxZoomLevel
                );
            }
        }
    }
}

tiles.forEach(tile => {
                minElevation = MathUtils.min2(minElevation, tile.minElevation);
                maxElevation = MathUtils.max2(
                    maxElevation,
                    tile.maxElevation + tile.maxGeometryHeight
                );
            });
        });