/guava/guava/src/com/google/common/collect/TreeMultiset.java
if ( ( value) != expected) {   throw new ConcurrentModificationException( ) ; }
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} else { return true; } } @Override public Entry<E> next() { <extra_id_0> throw new NoSuchElementException(); } requireNonNull(current); Entry<E> result = wrapEntry(current); prevEntry = result; if (current.pred() == header) {