+ * Inform Dali that the contents of the buffer have changed
+ *
+ * Example of updating the pixel buffer in the buffer image
+ * ```
+ * var newPixelBufferData = [0, 255, 0, 255, // green
+ * 255, 0, 0, 255, // red
+ * 255, 0, 0, 255, // red
+ * 0, 0, 255, 255]; // blue
+ *
+ * var pixelBuffer = bufferImage.getBuffer();
+ * var pixelBufferDataArray = new Uint8Array(pixelBuffer);
+ * pixelBufferDataArray.set(newPixelBufferData, 0);
+ *
+ * bufferImage.update();
+ * ```