in doxia-site-model/src/main/java/org/apache/maven/doxia/site/inheritance/DefaultSiteModelInheritanceAssembler.java [270:291]
private List<Logo> mergePoweredByLists(
final List<Logo> childList, final List<Logo> parentList, final URLRebaser urlContainer) {
List<Logo> logos = new ArrayList<>(childList.size() + parentList.size());
for (Logo logo : parentList) {
if (!logos.contains(logo)) {
final Logo clone = logo.clone();
rebaseLinkItemPaths(clone, urlContainer);
logos.add(clone);
}
}
for (Logo logo : childList) {
if (!logos.contains(logo)) {
logos.add(logo);
}
}
return logos;
}