code: @Override
  	public void writeHeader(OutputStream os) throws IOException {	
  		os.write(ascii("Content-Disposition: form-data; name=\"" + enc(controlName)
  				 + "\"" +
  				((fileName != null) ? "; filename=\"" + enc(fileName) + "\"" : "") + "\r\n")); 
  		wrappedContent.writeHeader(os);
  	}
docs: /* (non-Javadoc)
  @see us.monoid.web.AbstractContent#writeHeader(java.io.OutputStream)