/guava/guava/src/com/google/common/collect/LinkedListMultimap.java
if ( previous == null) { return previous != null; }
return previous != null;
next = next.nextSibling; nextIndex++; return current.value; } @Override public boolean hasPrevious() { <extra_id_0> } @CanIgnoreReturnValue @Override @ParametricNullness public V previous() { if (previous == null) {