symfony
diff --git a/‎UPGRADE-4.0.md
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diff --git a/‎src/Symfony/Component/Form/AbstractRendererEngine.php
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+2-4Lines changed: 2 additions & 4 deletions b/‎src/Symfony/Component/Form/AbstractRendererEngine.php
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+2-4Lines changed: 2 additions & 4 deletions
diff --git a/‎src/Symfony/Component/Form/FormRenderer.php
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+2-3Lines changed: 2 additions & 3 deletions b/‎src/Symfony/Component/Form/FormRenderer.php
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+2-3Lines changed: 2 additions & 3 deletions
diff --git a/‎src/Symfony/Component/Form/FormRendererEngineInterface.php
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+2-2Lines changed: 2 additions & 2 deletions b/‎src/Symfony/Component/Form/FormRendererEngineInterface.php
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diff --git a/‎src/Symfony/Component/Form/FormRendererInterface.php
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+2-2Lines changed: 2 additions & 2 deletions b/‎src/Symfony/Component/Form/FormRendererInterface.php
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+2-2Lines changed: 2 additions & 2 deletions
@@ -326,6 +326,8 @@ Form
    }
    ```
 
+ * `FormRendererInterface::setTheme` and `FormRendererEngineInterface::setTheme` have a new optional argument `$useDefaultThemes` with a default value set to `true`.
+
 FrameworkBundle
 ---------------
 
 
@@ -62,15 +62,13 @@ public function __construct(array $defaultThemes = array())
     /**
      * {@inheritdoc}
      */
-    public function setTheme(FormView $view, $themes /*, $useDefaultThemes = true */)
+    public function setTheme(FormView $view, $themes, $useDefaultThemes = true)
     {
         $cacheKey = $view->vars[self::CACHE_KEY_VAR];
 
         // Do not cast, as casting turns objects into arrays of properties
         $this->themes[$cacheKey] = is_array($themes) ? $themes : array($themes);
-
-        $args = func_get_args();
-        $this->useDefaultThemes[$cacheKey] = isset($args[2]) ? (bool) $args[2] : true;
+        $this->useDefaultThemes[$cacheKey] = (bool) $useDefaultThemes;
 
         // Unset instead of resetting to an empty array, in order to allow
         // implementations (like TwigRendererEngine) to check whether $cacheKey
 
@@ -70,10 +70,9 @@ public function getEngine()
     /**
      * {@inheritdoc}
      */
-    public function setTheme(FormView $view, $themes /*, $useDefaultThemes = true */)
+    public function setTheme(FormView $view, $themes, $useDefaultThemes = true)
     {
-        $args = func_get_args();
-        $this->engine->setTheme($view, $themes, isset($args[2]) ? (bool) $args[2] : true);
+        $this->engine->setTheme($view, $themes, $useDefaultThemes);
     }
 
     /**
 
@@ -25,9 +25,9 @@ interface FormRendererEngineInterface
      * @param mixed    $themes           The theme(s). The type of these themes
      *                                   is open to the implementation.
      * @param bool     $useDefaultThemes If true, will use default themes specified
-     *                                   in the engine, will be added to the interface in 4.0
+     *                                   in the engine
      */
-    public function setTheme(FormView $view, $themes /*, $useDefaultThemes = true */);
+    public function setTheme(FormView $view, $themes, $useDefaultThemes = true);
 
     /**
      * Returns the resource for a block name.
 
@@ -32,9 +32,9 @@ public function getEngine();
      * @param mixed    $themes           The theme(s). The type of these themes
      *                                   is open to the implementation.
      * @param bool     $useDefaultThemes If true, will use default themes specified
-     *                                   in the renderer, will be added to the interface in 4.0
+     *                                   in the renderer
      */
-    public function setTheme(FormView $view, $themes /*, $useDefaultThemes = true */);
+    public function setTheme(FormView $view, $themes, $useDefaultThemes = true);
 
     /**
      * Renders a named block of the form theme.
Original file line number	Diff line number	Diff line change
`@@ -326,6 +326,8 @@ Form`
`326`	`326`	`}`
`327`	`327`	```
`328`	`328`
	`329`	+ * `FormRendererInterface::setTheme` and `FormRendererEngineInterface::setTheme` have a new optional argument `$useDefaultThemes` with a default value set to `true`.
	`330`	`+`
`329`	`331`	`FrameworkBundle`
`330`	`332`	`---------------`
`331`	`333`
Original file line number	Diff line number	Diff line change
`@@ -70,10 +70,9 @@ public function getEngine()`
`70`	`70`	`/**`
`71`	`71`	`* {@inheritdoc}`
`72`	`72`	`*/`
`73`		`- public function setTheme(FormView $view, $themes /, $useDefaultThemes = true /)`
	`73`	`+ public function setTheme(FormView $view, $themes, $useDefaultThemes = true)`
`74`	`74`	`{`
`75`		`- $args = func_get_args();`
`76`		`- $this->engine->setTheme($view, $themes, isset($args[2]) ? (bool) $args[2] : true);`
	`75`	`+ $this->engine->setTheme($view, $themes, $useDefaultThemes);`
`77`	`76`	`}`
`78`	`77`
`79`	`78`	`/**`