if ((nsURI == null || nsURI.length() == 0)
if ((nsURI == null)
	public void namespace(String prefix, String nsURI)			throws TransformerException {		if ((nsURI == null || nsURI.length() == 0)				&& (prefix == null || prefix.length() == 0))			return;		try {			if (!tagIsOpen)				throw new TransformerException(						"Found a namespace declaration outside an element");			writer.write(' ');			writer.write("xmlns");			if (prefix != null && prefix.length() > 0) {				writer.write(':');				writer.write(prefix);			}			writer.write("=\"");			writeChars(nsURI, true);			writer.write('"');		} catch (IOException e) {			throw new TransformerException(e.getMessage(), e);		}	}