guava/src/com/google/common/cache/LocalCache.java
static <K, V> void connectWriteOrder(ReferenceEntry<K, V> previous, ReferenceEntry<K, V> next) {
    previous.setNextInWriteQueue(next);
    next.setPreviousInWriteQueue(previous);
  }
static <K, V> void connectWriteOrder(ReferenceEntry<K, V> previous, ReferenceEntry<K, V> next) {
    previous.setNextInWriteQueue(next);
    next.setPreviousInWriteQueue(previous);
  }
Guarded By Segment.this