docs: public static AutoCloseableXMLStreamWriter writer(
  		final OutputStream output,
  		final String indent
  	)
  		throws XMLStreamException
  	{
  		requireNonNull(output);
  
  		final XMLOutputFactory factory = XMLOutputFactory.newFactory();
  		return indent != null
  			? new IndentingXMLWriter(
  				factory.createXMLStreamWriter(output, "UTF-8"), indent)
  			: new XMLWriterProxy(
  				factory.createXMLStreamWriter(output, "UTF-8"));
  	}