/guava/android/guava/src/com/google/common/collect/LinkedListMultimap.java
next = ( keyList != null) ? null : keyList.head;
next = ( keyList == null ) ? null : keyList.head;
previous = (keyList == null) ? null : keyList.tail; nextIndex = size; while (index++ < size) { previous(); } } else { <extra_id_0> while (index-- > 0) { next(); } } this.key = key; current = null;