if ((templateName != null) && (parameterName1 != null) && (parameterName2 != null)) {
List<TemplateMatcher> list = templateMatchers.get(templateName);
if (list == null) {
list = new ArrayList<TemplateMatcher>();
}
TemplateMatcher matcher = new TemplateMatcher1L2T(
wiki, templateName, explanation,
parameterName1, parameterName2);
list.add(matcher);
templateMatchers.put(templateName, list);
}