// SMA struct for calculating simple moving average
type SMA struct {
	buf       []float64
	window    int     // len of buf
	idx       int     // current index in buf
	CAvg      float64 // cumulative average
	prevSMA   float64
	filledBuf bool
}

func newSMA(ln int) *SMA {
	if ln <= 0 {
		ln = defaultWindowSize
	}
	return &SMA{
		buf:    make([]float64, ln),
		window: ln,
		idx:    0,
	}
}

     */
    public static String readText(final Reader reader) {
        assertArgumentNotNull("reader", reader);

        final StringBuilder buf = new StringBuilder(BUF_SIZE);
        CopyUtil.copy(reader, buf);
        return new String(buf);
    }

	ListDir(ctx context.Context, origvolume, volume, dirPath string, count int) ([]string, error)
	ReadFile(ctx context.Context, volume string, path string, offset int64, buf []byte, verifier *BitrotVerifier) (n int64, err error)
	AppendFile(ctx context.Context, volume string, path string, buf []byte) (err error)
	CreateFile(ctx context.Context, origvolume, olume, path string, size int64, reader io.Reader) error

    assertTrue(source.wasStreamOpened());
    assertFalse(source.wasStreamClosed());

    StringWriter writer = new StringWriter();
    char[] buf = new char[64];
    int read;
    while ((read = reader.read(buf)) != -1) {
      writer.write(buf, 0, read);
    }
    reader.close();
    writer.close();

    assertTrue(source.wasStreamClosed());
    assertEquals(STRING, writer.toString());
  }

        execJob.testAppendJarFile(":", buf, libDir, "/base/path/");

        String result = buf.toString();
        assertTrue(result.contains(":/base/path/test1.jar"));
        assertTrue(result.contains(":/base/path/test2.JAR"));
        assertFalse(result.contains("test.txt"));

        // Test with non-existent directory
        buf = new StringBuilder();

     *
     * @return the concatenated output of all buffered lines
     */
    public String getOutput() {
        final StringBuilder buf = new StringBuilder(100);
        for (final String value : list) {
            buf.append(value).append("\n");
        }
        return buf.toString();
    }

    /**
     * Checks if the buffer contains a line that matches the specified value (after trimming).
     *

    }

    /**
     * Releases and returns the transaction buffer
     * @return the txn_buf
     */
    public byte[] releaseBuffer() {
        final byte[] buf = this.txn_buf;
        this.txn_buf = null;
        return buf;
    }

    /**
     * Gets the transaction subcommand
     * @return the subCommand
     */
    public final byte getSubCommand() {
        return this.subCommand;

    long ltime = 0L;

    @Override
    public void run() {
        try {
            final SmbFile f = new SmbFile(url);
            final SmbFile d = new SmbFile(f.getParent());
            final byte[] buf = new byte[1024];

            for (int ii = 0; ii < numIter; ii++) {

                synchronized (this) {
                    ltime = System.currentTimeMillis();
                    wait();
                }

            final StringBuilder buf = new StringBuilder(500);
            for (final Map.Entry<String, String> entry : infoMap.entrySet()) {
                if (buf.length() != 0) {
                    buf.append(',');
                }
                buf.append(entry.getKey()).append('=').append(entry.getValue());
            }

		},
	)

	return prefixUsageCache.GetWithCtx(ctx)
}

func loadDataUsageFromBackend(ctx context.Context, objAPI ObjectLayer) (DataUsageInfo, error) {
	buf, err := readConfig(ctx, objAPI, dataUsageObjNamePath)
	if err != nil {
		buf, err = readConfig(ctx, objAPI, dataUsageObjNamePath+".bkp")
		if err != nil {
			if errors.Is(err, errConfigNotFound) {
				return DataUsageInfo{}, nil
			}