cache.put(0, 10);
    cache.put(2, 30);

    fakeTicker.advance(999, MILLISECONDS);
    assertEquals(Integer.valueOf(30), cache.getIfPresent(2));
    fakeTicker.advance(1, MILLISECONDS);
    assertEquals(Integer.valueOf(30), cache.getIfPresent(2));
    fakeTicker.advance(1000, MILLISECONDS);
    assertEquals(null, cache.getIfPresent(0));
  }

  public void testExpireAfterWrite() {

  @CheckForNull private Reader current;

  MultiReader(Iterator<? extends CharSource> readers) throws IOException {
    this.it = readers;
    advance();
  }

  /** Closes the current reader and opens the next one, if any. */
  private void advance() throws IOException {
    close();
    if (it.hasNext()) {
      current = it.next().openStream();
    }
  }

  @Override

                _dst.enc_ndr_long(_name_buffers);
                _dst.enc_ndr_long(0);
                _dst.enc_ndr_long(_name_bufferl);
                int _name_bufferi = _dst.index;
                _dst.advance(2 * _name_bufferl);

                _dst = _dst.derive(_name_bufferi);
                for ( int _i = 0; _i < _name_bufferl; _i++ ) {
                    _dst.enc_ndr_short(this.name.buffer[ _i ]);
                }

    cache.asMap().put(1, -1);
    ticker.advance(1, MILLISECONDS);
    assertEquals(Integer.valueOf(1), cache.getUnchecked(0));
    assertEquals(Integer.valueOf(-1), cache.getUnchecked(1));
    assertEquals(Integer.valueOf(2), cache.getUnchecked(2));
    assertEquals(expectedLoads, loader.getLoadCount());
    assertEquals(expectedReloads, loader.getReloadCount());

    // refresh 2
    ticker.advance(1, MILLISECONDS);

            _dst.enc_ndr_small(sub_authority_count);
            int _identifier_authoritys = 6;
            int _identifier_authorityi = _dst.index;
            _dst.advance(1 * _identifier_authoritys);
            int _sub_authorityi = _dst.index;
            _dst.advance(4 * _sub_authoritys);

            _dst = _dst.derive(_identifier_authorityi);
            for (int _i = 0; _i < _identifier_authoritys; _i++) {

            _dst.enc_ndr_small(this.sub_authority_count);
            int _identifier_authoritys = 6;
            int _identifier_authorityi = _dst.index;
            _dst.advance(1 * _identifier_authoritys);
            int _sub_authorityi = _dst.index;
            _dst.advance(4 * _sub_authoritys);

            _dst = _dst.derive(_identifier_authorityi);
            for ( int _i = 0; _i < _identifier_authoritys; _i++ ) {

            if ( this.s != null ) {
                _dst = _dst.deferred;
                int _ss = this.count;
                _dst.enc_ndr_long(_ss);
                int _si = _dst.index;
                _dst.advance(4 * _ss);

                _dst = _dst.derive(_si);
                for ( int _i = 0; _i < _ss; _i++ ) {
                    this.s[ _i ].encode(_dst);
                }
            }
        }

                _dst.enc_ndr_long(_name_buffers);
                _dst.enc_ndr_long(0);
                _dst.enc_ndr_long(_name_bufferl);
                int _name_bufferi = _dst.index;
                _dst.advance(2 * _name_bufferl);

                _dst = _dst.derive(_name_bufferi);
                for (int _i = 0; _i < _name_bufferl; _i++) {
                    _dst.enc_ndr_short(name.buffer[_i]);
                }

            if (array != null) {
                _dst = _dst.deferred;
                int _arrays = count;
                _dst.enc_ndr_long(_arrays);
                int _arrayi = _dst.index;
                _dst.advance(4 * _arrays);

                _dst = _dst.derive(_arrayi);
                for (int _i = 0; _i < _arrays; _i++) {
                    array[_i].encode(_dst);
                }
            }
        }

    this.nodeIterator = graph.nodes().iterator();
  }

  /**
   * Called after {@link #successorIterator} is exhausted. Advances {@link #node} to the next node
   * and updates {@link #successorIterator} to iterate through the successors of {@link #node}.
   */
  final boolean advance() {
    checkState(!successorIterator.hasNext());
    if (!nodeIterator.hasNext()) {
      return false;
    }