lib-core/src/main/java/com/nhaarman/listviewanimations/ArrayAdapter.java
public boolean addAll(@NonNull final Collection<? extends T> collection) {
        boolean result = mItems.addAll(collection);
        notifyDataSetChanged();
        return result;
    }
public boolean addAll(@NonNull final Collection<? extends T> collection) {
        boolean result = mItems.addAll(collection);
        notifyDataSetChanged();
        return result;
    }
Adds the objects in the specified collection to the end of this List. The objects are added in the order in which they are returned from the collection's iterator.

@param collection the collection of objects.

@return {@code true} if this {@code List} is modified, {@code false} otherwise.