symfony
diff --git a/‎src/Symfony/Component/VarExporter/Instantiator.php
Lines changed: 14 additions & 20 deletions b/‎src/Symfony/Component/VarExporter/Instantiator.php
Lines changed: 14 additions & 20 deletions
@@ -29,15 +29,14 @@ final class Instantiator
      * For example:
      *
      *     // creates an empty instance of Foo
-     *     Instantiator::instantiate([Foo::class => []]);
+     *     Instantiator::instantiate(Foo::class);
      *
-     *     // creates a Foo instance and sets one of its public, protected or private properties
-     *     Instantiator::instantiate([Foo::class => ['propertyName' => $propertyValue]]);
+     *     // creates a Foo instance and sets one of its properties
+     *     Instantiator::instantiate(Foo::class, ['propertyName' => $propertyValue]);
      *
      *     // creates a Foo instance and sets a private property defined on its parent Bar class
-     *     Instantiator::instantiate([
-     *         Foo::class => [],
-     *         Bar::class => ['privatePropertyName' => $propertyValue],
+     *     Instantiator::instantiate(Foo::class, [], [
+     *         Bar::class => ['privateBarProperty' => $propertyValue],
      *     ]);
      *
      * Instances of ArrayObject, ArrayIterator and SplObjectHash can be created
@@ -49,24 +48,17 @@ final class Instantiator
      *     // creates an ArrayObject populated with $inputArray
      *     Instantiator::instantiate([ArrayObject::class => ["\0" => $inputArray]]);
      *
-     * @param array $propertiesByClass The properties to set on the object, keyed by the class to bind to
-     *                                 when setting them. The first key of the array defines the class
-     *                                 of the returned instance.
+     * @param string $class             The class of the instance to create
+     * @param array  $properties        The properties to set on the instance
+     * @param array  $privateProperties The private properties to set on the instance,
+     *                                  keyed by their declaring class
      *
      * @return object The created instance
      *
      * @throws ExceptionInterface When the instance cannot be created
      */
-    public static function instantiate(array $propertiesByClass)
+    public static function instantiate(string $class, array $properties = array(), array $privateProperties = array())
     {
-        if (!$propertiesByClass) {
-            throw new \ReflectionException('No class provided.');
-        }
-
-        foreach ($propertiesByClass as $class => $properties) {
-            break;
-        }
-
         $reflector = Registry::$reflectors[$class] ?? Registry::getClassReflector($class);
 
         if (Registry::$cloneable[$class]) {
@@ -81,9 +73,11 @@ public static function instantiate(array $propertiesByClass)
             $wrappedInstance = array(unserialize('O:'.\strlen($class).':"'.$class.'":0:{}'));
         }
 
-        $instance = array($instance);
+        if ($properties) {
+            $privateProperties[$class] = isset($privateProperties[$class]) ? $properties + $privateProperties[$class] : $properties;
+        }
 
-        foreach ($propertiesByClass as $class => $properties) {
+        foreach ($privateProperties as $class => $properties) {
             if (!$properties) {
                 continue;
             }