Corrige la signature des méthodes execute des commandes.

src/Command/GenerateCommand.php

@@ -46,6 +46,9 @@ class GenerateCommand extends Command
         $this->container = $container;
     }
 
+    /**
+     * {@inheritdoc}
+     */
     protected function configure(): void
     {
         $this
@@ -55,9 +58,9 @@ class GenerateCommand extends Command
     }
 
     /**
-     * @SuppressWarnings(UnusedFormalParameter)
+     * {@inheritdoc}
      */
-    protected function execute(InputInterface $input, OutputInterface $output): void
+    protected function execute(InputInterface $input, OutputInterface $output): int
     {
         $name = $input->getArgument('graph');
         $serviceId = "irstea_plant_uml.graph.$name";
@@ -70,5 +73,7 @@ class GenerateCommand extends Command
         $graph = $this->container->get($serviceId);
         $graph->visitAll();
         $graph->writeTo($writer);
+
+        return 0;
     }
 }

src/Command/ListCommand.php

@@ -64,7 +64,7 @@ class ListCommand extends Command
     /**
      * {@inheritdoc}
      */
-    protected function execute(InputInterface $input, OutputInterface $output)
+    protected function execute(InputInterface $input, OutputInterface $output): int
     {
         foreach ($this->graphNames as $name) {
             $output->writeln($name);

src/Command/RenderCommand.php

@@ -108,7 +108,7 @@ class RenderCommand extends Command
     /**
      * {@inheritdoc}
      */
-    protected function execute(InputInterface $input, OutputInterface $output): void
+    protected function execute(InputInterface $input, OutputInterface $output): int
     {
         $graphs = $input->getArgument('graph') ?: $this->graphNames;
         $format = $input->getOption('format') ?: $this->defaultFormat;
@@ -125,6 +125,8 @@ class RenderCommand extends Command
 
             $this->renderGraph($graph, $target, $format, $io);
         }
+
+        return 0;
     }
 
     /**