code: @Override
    public void write (@Nonnull final byte [] b) throws IOException
    {
      checkThreshold (b.length);
      getStream ().write (b);
      m_nWritten += b.length;
    }
docs: Writes <code>b.length</code> bytes from the specified byte array to this
  output stream.
  
  @param b
  The array of bytes to be written.
  @exception IOException
  if an error occurs.