checks whether an element exist in this queue . concode_field_sep int maxCapacity concode_elem_sep AtomicInteger writeBehindQueueItemCounter concode_elem_sep WriteBehindQueue<E> queue concode_field_sep void addLast concode_elem_sep int size concode_elem_sep void getFrontByNumber concode_elem_sep void clear concode_elem_sep void addCapacity concode_elem_sep boolean removeFirstOccurrence concode_elem_sep int drainTo concode_elem_sep void getFrontByTime concode_elem_sep void throwException concode_elem_sep void addFirst concode_elem_sep List<E> asList
boolean function ( E arg0 ) { return queue . contains ( arg0 ) ; }