symfony
diff --git a/‎src/Symfony/Component/Workflow/CHANGELOG.md
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+5Lines changed: 5 additions & 0 deletions b/‎src/Symfony/Component/Workflow/CHANGELOG.md
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+5Lines changed: 5 additions & 0 deletions
diff --git a/‎src/Symfony/Component/Workflow/Registry.php
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+4-7Lines changed: 4 additions & 7 deletions b/‎src/Symfony/Component/Workflow/Registry.php
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+4-7Lines changed: 4 additions & 7 deletions
diff --git a/‎src/Symfony/Component/Workflow/Tests/RegistryTest.php
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-23Lines changed: 0 additions & 23 deletions b/‎src/Symfony/Component/Workflow/Tests/RegistryTest.php
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@@ -1,6 +1,11 @@
 CHANGELOG
 =========
 
+4.0.0
+-----
+
+ * Removed class name support in `WorkflowRegistry::add()` as second parameter.
+
 3.3.0
 -----
 
 
@@ -12,7 +12,6 @@
 namespace Symfony\Component\Workflow;
 
 use Symfony\Component\Workflow\Exception\InvalidArgumentException;
-use Symfony\Component\Workflow\SupportStrategy\ClassInstanceSupportStrategy;
 use Symfony\Component\Workflow\SupportStrategy\SupportStrategyInterface;
 
 /**
@@ -24,15 +23,13 @@ class Registry
     private $workflows = array();
 
     /**
-     * @param Workflow                        $workflow
-     * @param string|SupportStrategyInterface $supportStrategy
+     * @param Workflow                 $workflow
+     * @param SupportStrategyInterface $supportStrategy
      */
     public function add(Workflow $workflow, $supportStrategy)
     {
         if (!$supportStrategy instanceof SupportStrategyInterface) {
-            @trigger_error('Support of class name string was deprecated after version 3.2 and won\'t work anymore in 4.0.', E_USER_DEPRECATED);
-
-            $supportStrategy = new ClassInstanceSupportStrategy($supportStrategy);
+            throw new \InvalidArgumentException('The "supportStrategy" is not an instance of SupportStrategyInterface.');
         }
 
         $this->workflows[] = array($workflow, $supportStrategy);
@@ -64,7 +61,7 @@ public function get($subject, $workflowName = null)
         return $matched;
     }
 
-    private function supports(Workflow $workflow, $supportStrategy, $subject, $workflowName)
+    private function supports(Workflow $workflow, SupportStrategyInterface $supportStrategy, $subject, $workflowName)
     {
         if (null !== $workflowName && $workflowName !== $workflow->getName()) {
             return false;
 
@@ -65,29 +65,6 @@ public function testGetWithNoMatch()
         $this->assertSame('workflow1', $w1->getName());
     }
 
-    /**
-     * @group legacy
-     */
-    public function testGetWithSuccessLegacyStrategy()
-    {
-        $registry = new Registry();
-
-        $registry->add(new Workflow(new Definition(array(), array()), $this->getMockBuilder(MarkingStoreInterface::class)->getMock(), $this->getMockBuilder(EventDispatcherInterface::class)->getMock(), 'workflow1'), Subject1::class);
-        $registry->add(new Workflow(new Definition(array(), array()), $this->getMockBuilder(MarkingStoreInterface::class)->getMock(), $this->getMockBuilder(EventDispatcherInterface::class)->getMock(), 'workflow2'), Subject2::class);
-
-        $workflow = $registry->get(new Subject1());
-        $this->assertInstanceOf(Workflow::class, $workflow);
-        $this->assertSame('workflow1', $workflow->getName());
-
-        $workflow = $registry->get(new Subject1(), 'workflow1');
-        $this->assertInstanceOf(Workflow::class, $workflow);
-        $this->assertSame('workflow1', $workflow->getName());
-
-        $workflow = $registry->get(new Subject2(), 'workflow2');
-        $this->assertInstanceOf(Workflow::class, $workflow);
-        $this->assertSame('workflow2', $workflow->getName());
-    }
-
     private function createSupportStrategy($supportedClassName)
     {
         $strategy = $this->getMockBuilder(SupportStrategyInterface::class)->getMock();