public SortedSet<FluentMethod> getEffectiveMethods() {
if (effectiveMethods == null) {
effectiveMethods = new TreeSet<>(methods);
removeBaseMethods(effectiveMethods);
}
return effectiveMethods;
}
private void filterEffectiveMethods(SortedSet<FluentMethod> effectiveMethods) {
effectiveMethods.removeAll(getMethods());
removeBaseMethods(effectiveMethods);
}