     ><span class="tsd-signature-symbol">; </span>cache<span
                  class="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;</sp