code: public function load(array $configs, ContainerBuilder $container)
      {
          $configs[] = $this->options;
          $configuration = $this->getConfiguration($configs, $container);
          $config = $this->processConfiguration($configuration, $configs);
  
          foreach ($config['channels'] as $name => $channelConfig) {
              $channelConfig['name'] = $name;
              switch ($channelConfig['handler']) {
                  case 'stream':
                      $this->configureStreamChannel($channelConfig, $container);
  
                      break;
  
                  case 'error_log':
                      $this->configureErrorLogChannel($channelConfig, $container);
  
                      break;
              }
          }
      }
docs: Loads a specific configuration.
  
  @param array            $configs   An array of configuration values
  @param ContainerBuilder $container A ContainerBuilder instance