private static embedPositionDetectionPattern(xStart: number /*int*/, yStart: number /*int*/, matrix: ByteMatrix): void {
        for (let y = 0; y < 7; ++y) {
            const patternY: Int32Array = MatrixUtil.POSITION_DETECTION_PATTERN[y];
            for (let x = 0; x < 7; ++x) {
                matrix.setNumber(xStart + x, yStart + y, patternY[x]);