+ int aSize = theAttribute->size();
+ // keep objects at the beginning of the list if they the same
+ auto it = theValue.begin();
+ for (int anIndex = 0; it != theValue.end() && anIndex < aSize; ++it, ++anIndex)
+ if (theAttribute->object(anIndex) != *it) {
+ // remove the tail of the list
+ while (++anIndex <= aSize)
+ theAttribute->removeLast();
+ break;
+ }
+ // append the rest of elements
+ for (; it != theValue.end(); ++it)