[Console] Add protected static $defaultName to set the default name of a Command

Author: nicolas-grekas

Command/LintCommand.php

@@ -28,6 +28,8 @@
  */
 class LintCommand extends Command
 {
+    protected static $defaultName = 'lint:yaml';
+
     private $parser;
     private $format;
     private $displayCorrectFiles;
@@ -48,7 +50,6 @@ public function __construct($name = null, $directoryIteratorProvider = null, $is
     protected function configure()
     {
         $this
-            ->setName('lint:yaml')
             ->setDescription('Lints a file and outputs encountered errors')
             ->addArgument('filename', null, 'A file or a directory or STDIN')
             ->addOption('format', null, InputOption::VALUE_REQUIRED, 'The output format', 'txt')

composer.json

@@ -19,7 +19,10 @@
         "php": "^5.5.9|>=7.0.8"
     },
     "require-dev": {
-        "symfony/console": "~2.8|~3.0|~4.0"
+        "symfony/console": "~3.4|~4.0"
+    },
+    "conflict": {
+        "symfony/console": "<3.4"
     },
     "suggest": {
         "symfony/console": "For validating YAML files using the lint command"