Backport type fixes

Author: nicolas-grekas

Argument/ServiceLocator.php

@@ -37,7 +37,7 @@ public function __construct(\Closure $factory, array $serviceMap, array $service
      *
      * @return mixed
      */
-    public function get($id)
+    public function get(string $id)
     {
         return isset($this->serviceMap[$id]) ? ($this->factory)(...$this->serviceMap[$id]) : parent::get($id);
     }

ContainerInterface.php

@@ -51,8 +51,6 @@ public function set(string $id, ?object $service);
     public function get(string $id, int $invalidBehavior = self::EXCEPTION_ON_INVALID_REFERENCE);
 
     /**
-     * @param string $id The service identifier
-     *
      * @return bool true if the service is defined, false otherwise
      */
     public function has(string $id);

Loader/YamlFileLoader.php

@@ -148,7 +148,7 @@ public function load($resource, string $type = null)
         }
     }
 
-    private function loadContent($content, $path)
+    private function loadContent(array $content, string $path)
     {
         // imports
         $this->parseImports($content, $path);

ParameterBag/ContainerBag.php

@@ -38,7 +38,7 @@ public function all()
      *
      * @return mixed
      */
-    public function get($name)
+    public function get(string $name)
     {
         return $this->container->getParameter($name);
     }
@@ -48,7 +48,7 @@ public function get($name)
      *
      * @return bool
      */
-    public function has($name)
+    public function has(string $name)
     {
         return $this->container->hasParameter($name);
     }

ServiceLocator.php

@@ -38,7 +38,7 @@ class ServiceLocator implements ServiceProviderInterface
      *
      * @return mixed
      */
-    public function get($id)
+    public function get(string $id)
     {
         if (!$this->externalId) {
             return $this->doGet($id);