Merge branch '3.4' into 4.1

* 3.4: (21 commits)
  Added the Code of Conduct file
  do not override custom access decision configs
  [Security] Do not deauthenticate user when the first refreshed user has changed
  invalidate stale commits for PRs too
  add missing cache prefix seed attribute to XSD
  fix command description
  Fix class documentation
  [Validator] Add a missing translation
  [FrameworkBundle] Fix 3.4 tests
  [DI] fix dumping inline services again
  Fix phpdocs
  [EventDispatcher] Remove template method in test case
  Added LB translation for #27993 (UUID validator message translation)
  Replace deprecated validateValue with validate
  [FWBundle] Automatically enable PropertyInfo when using Flex
  [Process] fix locking of pipe files on Windows
  Correct PHPDoc type for float ttl
  bumped Symfony version to 3.4.18
  updated VERSION for 3.4.17
  updated CHANGELOG for 3.4.17
  ...

Author: nicolas-grekas

Command/Command.php

@@ -361,10 +361,12 @@ public function getNativeDefinition()
     /**
      * Adds an argument.
      *
-     * @param string $name        The argument name
-     * @param int    $mode        The argument mode: InputArgument::REQUIRED or InputArgument::OPTIONAL
-     * @param string $description A description text
-     * @param mixed  $default     The default value (for InputArgument::OPTIONAL mode only)
+     * @param string               $name        The argument name
+     * @param int|null             $mode        The argument mode: self::REQUIRED or self::OPTIONAL
+     * @param string               $description A description text
+     * @param string|string[]|null $default     The default value (for self::OPTIONAL mode only)
+     *
+     * @throws InvalidArgumentException When argument mode is not valid
      *
      * @return $this
      */
@@ -378,11 +380,13 @@ public function addArgument($name, $mode = null, $description = '', $default = n
     /**
      * Adds an option.
      *
-     * @param string $name        The option name
-     * @param string $shortcut    The shortcut (can be null)
-     * @param int    $mode        The option mode: One of the InputOption::VALUE_* constants
-     * @param string $description A description text
-     * @param mixed  $default     The default value (must be null for InputOption::VALUE_NONE)
+     * @param string                    $name        The option name
+     * @param string|array              $shortcut    The shortcuts, can be null, a string of shortcuts delimited by | or an array of shortcuts
+     * @param int|null                  $mode        The option mode: One of the VALUE_* constants
+     * @param string                    $description A description text
+     * @param string|string[]|bool|null $default     The default value (must be null for self::VALUE_NONE)
+     *
+     * @throws InvalidArgumentException If option mode is invalid or incompatible
      *
      * @return $this
      */