lass="tsd-signature-symbol">?: </span
                      ><span class="tsd-signature-type">LRUCache</span
                      ><span class="tsd-signature-symbol">&lt;</span
                      ><span class="tsd-signature-type">number</span
                      ><span class="tsd-signature-symbol">, </span
                      ><span class="tsd-signature-type">string</span
                      ><span class="tsd-signature-symbol">&gt;</span>
                    </h5>
                  </li>
         