code: private void logBlock(int blockIndex, int startIndex, int blockLength)
     {
        if (m_log != null)
        {
           m_log.println("Block Index: " + blockIndex);
           m_log.println("Length: " + blockLength + " (" + Integer.toHexString(blockLength) + ")");
           m_log.println();
           m_log.println(FastTrackUtility.hexdump(m_buffer, startIndex, blockLength, true, 16, ""));
           m_log.flush();
        }
     }
docs: Log block data.
  
  @param blockIndex current block index
  @param startIndex start index
  @param blockLength length