[doctrineGH-3572] Deprecation trigger for LoggerChain::addLogger

Author: beberlei

lib/Doctrine/DBAL/Logging/LoggerChain.php

@@ -2,6 +2,8 @@
 
 namespace Doctrine\DBAL\Logging;
 
+use Doctrine\Deprecations\Deprecation;
+
 /**
  * Chains multiple SQLLogger.
  */
@@ -27,6 +29,12 @@ public function __construct(array $loggers = [])
      */
     public function addLogger(SQLLogger $logger)
     {
+        Deprecation::trigger(
+            'doctrine/dbal',
+            'https://github.com/doctrine/dbal/pull/3572',
+            'LoggerChain::addLogger() is deprecated, use LoggerChain constructor instead.'
+        );
+
         $this->loggers[] = $logger;
     }