in src/main/java/org/apache/sling/xss/impl/xml/MapBuilder.java [126:137]
private void parseGlobalAttributes(List<Attribute> root) throws InvalidConfigException {
for (Attribute ele : root) {
String name = ele.getName();
Attribute toAdd = policy.commonAttributes.get(name);
if (toAdd != null)
policy.globalAttributes.put(name, toAdd);
else
throw new InvalidConfigException("Global attribute '" + name
+ "' was not defined in <common-attributes>");
}
}