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vendor/symfony/console/Command/SignalableCommandInterface.php

@@ -25,6 +25,10 @@ interface SignalableCommandInterface
 
     /**
      * The method will be called when the application is signaled.
+     *
+     * @param int|false $previousExitCode
+
+     * @return int|false The exit code to return or false to continue the normal execution
      */
-    public function handleSignal(int $signal): void;
+    public function handleSignal(int $signal, /* int|false $previousExitCode = 0 */);
 }