Issue #3219513 by quietone, smustgrave, Vidushi Mehta, sourabhjain, rpayanm,...

 *   <dt>Faster instantiation of the event dispatcher service</dt>

 *   <dd>

 *     Instead of calling <code>addSubscriberService</code> once for each

 *     subscriber, a precompiled array of listener definitions is passed

 *     subscriber, a pre-compiled array of listener definitions is passed

 *     directly to the constructor. This is faster by roughly an order of

 *     magnitude. The listeners are collected and prepared using a compiler

 *     pass.

use Drupal\Core\Database\Event\StatementExecutionStartEvent;

/**

 * An implementation of StatementInterface that prefetches all data.

 * An implementation of StatementInterface that pre-fetches all data.

 *

 * This class behaves very similar to a StatementWrapper of a \PDOStatement

 * but as it always fetches every row it is possible to manipulate those

use Symfony\Component\HttpKernel\Event\ResponseEvent;

use Symfony\Component\HttpKernel\KernelEvents;

// cspell:ignore noemptytag

/**

 * Subscribes to filter HTML responses, to set the 'is-active' class on links.

 *

      }

    }

    // We precreated user 1 with placeholder values. Let's save the real values.

    // We created user 1 with placeholder values. Let's save the real values.

    $account = $this->userStorage->load(1);

    $account->init = $account->mail = $account_values['mail'];

    $account->roles = $account->getRoles();

use Symfony\Component\Routing\Route;

/**

 * Defines a class which preloads non-admin routes.

 * Defines a class that can pre-load non-admin routes.

 *

 * On an actual site we want to avoid too many database queries so we build a

 * list of all routes which most likely appear on the actual site, which are all