Rename variable to $overwrite

src/Symfony/Component/HttpKernel/HttpCache/Store.php

@@ -180,7 +180,7 @@ public function write(Request $request, Response $response)
         $digest = $this->generateContentDigest($response);
         $response->headers->set('X-Content-Digest', $digest);
 
-        if (!$this->save($digest, $response->getContent(), true)) {
+        if (!$this->save($digest, $response->getContent(), false)) {
             throw new \RuntimeException('Unable to store the entity.');
         }
 
@@ -358,17 +358,17 @@ private function load($key)
     /**
      * Save data for the given key.
      *
-     * @param string $key                 The store key
-     * @param string $data                The data to store
-     * @param bool   $noOverwriteIfExists Don't overwrite data if the key already exists
+     * @param string $key       The store key
+     * @param string $data      The data to store
+     * @param bool   $overwrite Whether existing data should be overwritten
      *
      * @return bool
      */
-    private function save($key, $data, $noOverwriteIfExists = false)
+    private function save($key, $data, $overwrite = true)
     {
         $path = $this->getPath($key);
 
-        if ($noOverwriteIfExists && file_exists($path)) {
+        if (!$overwrite && file_exists($path)) {
             return true;
         }