code: private function getDbsOptionsInitializerDefinition(Container $container): callable
      {
          return $container->protect(function () use ($container) {
              static $initialized = false;
  
              if ($initialized) {
                  return;
              }
  
              $initialized = true;
  
              foreach ((array) $container['doctrine.dbal.types'] as $typeName => $typeClass) {
                  if (Type::hasType($typeName)) {
                      Type::overrideType($typeName, $typeClass);
                  } else {
                      Type::addType($typeName, $typeClass);
                  }
              }
  
              if (!isset($container['doctrine.dbal.dbs.options'])) {
                  $container['doctrine.dbal.dbs.options'] = [
                      'default' => $container['doctrine.dbal.db.options'] ?? [],
                  ];
              }
  
              $tmp = $container['doctrine.dbal.dbs.options'];
              foreach ($tmp as $name => &$options) {
                  $options = array_replace_recursive($container['doctrine.dbal.db.default_options'], $options);
  
                  if (!isset($container['doctrine.dbal.dbs.default'])) {
                      $container['doctrine.dbal.dbs.default'] = $name;
                  }
              }
  
              $container['doctrine.dbal.dbs.options'] = $tmp;
          });
      }
docs: @param Container $container
  
  @return callable