code: private function configureBoostMap(ContainerBuilder $container, $connectionName, $connectionParams)
      {
          $alias = $this->getAlias();
          $boostFactorMap = $this->buildBoostFactorMap($connectionParams['boost_factors']);
          $boostFactorMapId = "{$alias}.connection.{$connectionName}.boost_factor_map_id";
  
          $container->setParameter($boostFactorMapId, $boostFactorMap);
      }
docs: Creates boost factor map parameter for a given $connectionName.
  
  @param ContainerBuilder $container
  @param string $connectionName
  @param array $connectionParams