Convert Stream To String in Kotlin

private fun convertStreamToString(inputStream: InputStream): String {
        val reader = BufferedReader(InputStreamReader(inputStream, "utf-8"))
        val sb = StringBuilder()

        var line: String?
        try {
            while (reader.readLine().also { line = it } != null) {
                sb.append(line)
            }
        } catch (e: Exception) {
            e.printStackTrace()
        } finally {
            inputStream.close()
        }
        return sb.toString()
    }