title: PHPExcel_Settings::setCacheStorageMethod alternative in PhpSpreadsheet
body: <p>I have this lines in my previous code        </p>
  
  <pre><code>$cacheMethod = PHPExcel_CachedObjectStorageFactory:: cache_to_phpTemp;
  $cacheSettings = array( 'memoryCacheSize'  =&gt; '32MB');
  PHPExcel_Settings::setCacheStorageMethod($cacheMethod, $cacheSettings);
  </code></pre>
  
  <p>Now I am trying to migrate to PhpSpreadsheet.</p>
  
  <p>I am able to find class \PhpOffice\PhpSpreadsheet\Settings and methods setCache() and getCache(). But still not able find this options what i have. </p>
  
  <p>Can anyone provide a way or an example to do what i am doing in PHPExcel into PhpSpreadsheet.    </p>