diff --git a/core/lib/Drupal/Core/StreamWrapper/LocalStreamTrait.php b/core/lib/Drupal/Core/StreamWrapper/LocalStreamTrait.php
index 141f3303a8..40c56c0bb7 100644
--- a/core/lib/Drupal/Core/StreamWrapper/LocalStreamTrait.php
+++ b/core/lib/Drupal/Core/StreamWrapper/LocalStreamTrait.php
@@ -66,5 +66,4 @@ protected function getTarget($uri = NULL) {
     return trim($uri_parts[1], '\/');
   }
 
-
 }
diff --git a/core/lib/Drupal/Core/StreamWrapper/StreamWrapperBase.php b/core/lib/Drupal/Core/StreamWrapper/StreamWrapperBase.php
index 9bea1adc50..366a2f11d7 100644
--- a/core/lib/Drupal/Core/StreamWrapper/StreamWrapperBase.php
+++ b/core/lib/Drupal/Core/StreamWrapper/StreamWrapperBase.php
@@ -33,7 +33,7 @@
   /**
    * {@inheritdoc}
    */
-  function setUri($uri) {
+  public function setUri($uri) {
     if (strpos($uri, '://') === FALSE) {
       // The delimiter ('://') was not found in $uri, malformed $uri passed.
       throw new \InvalidArgumentException("Malformed uri parameter passed: {$this->uri}");
@@ -44,7 +44,7 @@ function setUri($uri) {
   /**
    * {@inheritdoc}
    */
-  function getUri() {
+  public function getUri() {
     return $this->uri;
   }
 
diff --git a/core/modules/system/tests/src/Kernel/File/ExtensionStreamTest.php b/core/modules/system/tests/src/Kernel/File/ExtensionStreamTest.php
index 6b867739bb..e3a625563b 100644
--- a/core/modules/system/tests/src/Kernel/File/ExtensionStreamTest.php
+++ b/core/modules/system/tests/src/Kernel/File/ExtensionStreamTest.php
@@ -57,7 +57,7 @@ public function setUp() {
     $system_module_files += ['minimal' => 'core/profiles/minimal/minimal.info.yml'];
     $state->set('system.module.files', $system_module_files);
     // Add default profile for the purposes of this test.
-    new Settings(Settings::getAll() +  ['install_profile' => 'minimal']);
+    new Settings(Settings::getAll() + ['install_profile' => 'minimal']);
     $this->config('core.extension')->set('module.minimal', 0)->save();
     $this->container->get('module_handler')->addProfile('minimal', 'core/profiles/minimal');
 
@@ -136,7 +136,7 @@ public function testStreamWrapperMethods($uri, $dirname, $realpath, $getExternal
     $case = compact('dirname', 'realpath', 'getExternalUrl');
 
     foreach ($case as $method => $expected) {
-      list($scheme, ) = explode('://', $uri);
+      list($scheme,) = explode('://', $uri);
       $this->streamWrappers[$scheme]->setUri($uri);
       if ($expected instanceof \InvalidArgumentException || $expected instanceof \RuntimeException) {
         /** @var \Exception $expected */
@@ -153,7 +153,7 @@ public function testStreamWrapperMethods($uri, $dirname, $realpath, $getExternal
         }
       }
       elseif (is_string($expected)) {
-        $this->assertSame($expected,  $this->streamWrappers[$scheme]->$method());
+        $this->assertSame($expected, $this->streamWrappers[$scheme]->$method());
       }
     }
   }