/guava/guava/src/com/google/common/collect/ForwardingNavigableMap.java
if ( ( nextOrNull) == null) {   throw new NoSuchElementException( ) ; }
[Delete]
public boolean hasNext() { return nextOrNull != null; } @Override public java.util.Map.Entry<K, V> next() { if (nextOrNull == null) { <extra_id_0> } try { return nextOrNull; } finally { toRemove = nextOrNull; nextOrNull = forward().lowerEntry(nextOrNull.getKey());