in src/main/java/org/apache/struts/annotations/taglib/apt/TagAnnotationProcessor.java [159:166]
private static void populateTagAttributes(TagAttribute attribute, Map<String, Object> values) {
attribute.setRequired((Boolean) values.get("required"));
attribute.setRtexprvalue((Boolean) values.get("rtexprvalue"));
attribute.setDefaultValue((String) values.get("defaultValue"));
attribute.setType((String) values.get("type"));
attribute.setDescription((String) values.get("description"));
attribute.setName((String) values.get("name"));
}