@Specialization
public Object construct(VirtualFrame frame, RubyHash hash, Object index) {
final Object value = hash.get(index);
if (value == null) {
if (hash.defaultBlock == null) {
return NilPlaceholder.INSTANCE;
} else {
return hash.defaultBlock.call(frame.pack(), hash, index);
}
} else {
return value;
}
}
