code: @Override
      @OverridingMethodsMustInvokeSuper
      protected void updateListAfterPut(CacheEntry<K, V> newEntry) {
          if (_last == null) {
              _last = newEntry;
              _first = newEntry;
          } else {
              _first.setPrevious(newEntry);
              newEntry.setNext(_first);
              setFirst(newEntry);
          }
      }
docs: Add the new CacheEntry <b>before</b> the rest.