FragmentAt
duplicate_array* array = fragment->FragmentAt(j);
duplicate_array* array = duplicate->FragmentAt(
duplicate_array* array = fragment->FragmentAt(fragmentIndex);
duplicate_array* array = duplicate->FragmentAt(
duplicate_array* target = fragment->FragmentAt(fragmentIndex);
array = node->FragmentAt(
duplicate_array* array = FragmentAt(i);
inline duplicate_array* FragmentAt(int8 index) const;