Fix PHPStan errors

Author: mabar

tests/Doubles/AnotherDefaultNameCommand.php

@@ -14,6 +14,9 @@ public static function getDefaultName(): string
 		return 'another-default';
 	}
 
+	/**
+	 * @throws void
+	 */
 	protected function execute(InputInterface $input, OutputInterface $output): int
 	{
 		return 0;

tests/Doubles/DefaultBothCommand.php

@@ -19,6 +19,9 @@ public static function getDefaultDescription(): string
 		return 'Default description';
 	}
 
+	/**
+	 * @throws void
+	 */
 	protected function execute(InputInterface $input, OutputInterface $output): int
 	{
 		return 0;

tests/Doubles/DefaultNameCommand.php

@@ -14,6 +14,9 @@ public static function getDefaultName(): string
 		return 'default';
 	}
 
+	/**
+	 * @throws void
+	 */
 	protected function execute(InputInterface $input, OutputInterface $output): int
 	{
 		return 0;

tests/Doubles/HiddenAndAliasedCommand.php

@@ -14,6 +14,9 @@ public static function getDefaultName(): string
 		return '|i|am|hiding|aliasses';
 	}
 
+	/**
+	 * @throws void
+	 */
 	protected function execute(InputInterface $input, OutputInterface $output): int
 	{
 		return 0;

tests/Doubles/SimpleCommand.php

@@ -14,6 +14,9 @@ public function __construct()
 		parent::__construct();
 	}
 
+	/**
+	 * @throws void
+	 */
 	protected function execute(InputInterface $input, OutputInterface $output): int
 	{
 		return 0;

tests/Doubles/UrlPrintingCommand.php

@@ -37,6 +37,9 @@ protected function configure(): void
 		$this->addOption('option');
 	}
 
+	/**
+	 * @throws void
+	 */
 	protected function execute(InputInterface $input, OutputInterface $output): int
 	{
 		$output->write((string) $this->request->getUrl());