code: @Override
    public void write (@Nonnull final String sStr, @Nonnegative final int nOfs, @Nonnegative final int nLen)
    {
      if (nLen > 0)
      {
        final int newcount = m_nCount + nLen;
        if (newcount > m_aBuf.length)
        {
          m_aBuf = Arrays.copyOf (m_aBuf, Math.max (m_aBuf.length << 1, newcount));
        }
        sStr.getChars (nOfs, nOfs + nLen, m_aBuf, m_nCount);
        m_nCount = newcount;
      }
    }
docs: Write a portion of a string to the buffer.
  
  @param sStr
  String to be written from
  @param nOfs
  Offset from which to start reading characters
  @param nLen
  Number of characters to be written