private Site updateUseSite() {
if (TRACE_USE_SITES) {
Site here = new Site();
useSites.add(here);
return here;
} else if (TRACE_SINGLE_USE_SITE) {
if (multipleUseSites) {
return null;
} else {
Site here = new Site();
if (singleUseSite == null) {
singleUseSite = here;
} else {
if (!here.equals(singleUseSite)) {
multipleUseSites = true;
singleUseSite = null;
}
}
return here;
}
} else {
return null;
}
}
