AN_Cloud Function: Class for File extension functions.

FileExtension.kt

/**
 * Context extension function which will save the file into the device local storage.
 * @param data - content of the file.
 * @param fileName - name of the final file.
 */
fun Context.saveFile(data: ByteArray, fileName: String) =
        openFileOutput(fileName, Context.MODE_PRIVATE)?.apply {
            write(data)
            close()
        }