for (int i = 0; i < formatters.length; i++) {
formatters[i] = template.getFormatter(formatterNames[i]);
if (formatters[i] == null)
throw new RuntimeException("Unsupported formatter: " + formatterNames[i]);
}
template.appendOperation(new FormatOperation(template.getCurrentTemplatePosition(), new ChainedFormatter("", formatters)));
return null;
}