question: returns unmodifiable list representation of this queue . concode_field_sep Deque<DelayedEntry> deque concode_elem_sep Map<Data,MutableInteger> index concode_field_sep void addCountIndex concode_elem_sep void addCountIndex concode_elem_sep void addLast concode_elem_sep boolean contains concode_elem_sep void decreaseCountIndex concode_elem_sep int size concode_elem_sep void getFrontByNumber concode_elem_sep void clear concode_elem_sep boolean removeFirstOccurrence concode_elem_sep int drainTo concode_elem_sep void getFrontByTime concode_elem_sep void resetCountIndex concode_elem_sep void addFirst
target: List < DelayedEntry > function ( ) { return Collections . unmodifiableList ( new ArrayList < DelayedEntry > ( deque ) ) ; }