https://api.drupal.org/api/drupal/core%21tests%21Drupal%21Tests%21PerformanceData.php/property/PerformanceData%3A%3AstylesheetCount/11.x
PerformanceData::$stylesheetCount | Drupal API
drupalapi
https://api.drupal.org/api/drupal/core%21tests%21Drupal%21Tests%21PerformanceData.php/property/PerformanceData%3A%3AstylesheetBytes/11.x
PerformanceData::$stylesheetBytes | Drupal API
drupalapi
https://api.drupal.org/api/drupal/core%21tests%21Drupal%21Tests%21PerformanceData.php/property/PerformanceData%3A%3AcacheSetCount/11.x
PerformanceData::$cacheSetCount | Drupal API
drupalapi