/**
   * Add key to request.
   *
   * @param key Key to evict.
   * @param ver Entry version.
   * @param near {@code true} if key should be evicted from near cache.
   */
  void addKey(K key, GridCacheVersion ver, boolean near) {
    assert key != null;
    assert ver != null;

    entries.add(F.t(key, ver, near));
  }