### Question:
ListPM extends AbstractPM implements IListPM<T> { public T getAt(int index) { return entries.get(index).element; } ListPM();  ListPM(int initialCapacity);  ListPM(ArrayList<Entry> list); protected  ListPM(List<Entry> list); Sorter getSorter(); void setSorter(Sorter sorter); boolean isRevalidateElementsOnChangeEnabled(); void setRevalidateElementsOnChangeEnabled(boolean enabled); void addListListener(ListListener l); void removeListListener(ListListener l); void revalidateElements(); void replace(T oldElement, T newElement); void replace(int index, T newElement); void add(T element); void add(int index, T element); void addAll(Collection<T> col); boolean contains(T element); boolean containsAll(Collection<T> col); void clear(); boolean removeAll(Collection<? extends T> col); boolean remove(T element); T removeAt(int index); void swap(int indexA, int indexB); void swap(T elemA, T elemB); void reverse(); void sortBy(boolean ascending, Path... paths); void sortBy(Collection<SortKey> newSortKeys); void sortBy(SortKey... newSortKeys); Collection<SortKey> getSortKeys(); T getAt(int index); Collection<T> toCollection(); Object[] toArray(); Selection<T> getSelection(); int indexOf(T element); int[] indicesOf(Collection<? extends T> col); int size(); boolean isEmpty(); Iterator<T> iterator(); ListIterator<T> listIterator(final int index);  }### Answer:
@Test public void getAt() { assertEquals("list.getAt(elementIndex)", element, list.getAt(elementIndex)); }