Expanded class hierarchy of Connection in Zircon Profile 8
- class \Drupal\Core\Database\Connection
- class \Drupal\Core\Database\Driver\mysql\Connection
- class \Drupal\Core\Database\Driver\pgsql\Connection
- class \Drupal\Core\Database\Driver\sqlite\Connection
- class \Drupal\Tests\Core\Database\Stub\StubConnection