code: public void writeContentBytes (@Nonnull @WillNotClose final OutputStream aOS) throws IOException
    {
      aOS.write (m_aContent, 0, m_aContent.length);
    }
docs: Write all the binary content to the passed output stream. No Base64
  encoding is performed in this method.
  
  @param aOS
  The output stream to write to. May not be <code>null</code>.
  @throws IOException
  from OutputStream