Issue #2980670 by follow-up alexpott: Install a site from config if the config directory is set in settings.php

core/tests/Drupal/FunctionalTests/Installer/InstallerExistingConfigSyncDirectoryProfileHookInstall.php

@@ -44,11 +44,19 @@ EOF;
     return;
   }
 
+  /**
+   * Installer step: Requirements problem.
+   */
+  protected function setUpRequirementsProblem() {
+    // This form will never be reached.
+    return;
+  }
+
   /**
    * Installer step: Configure settings.
    */
   protected function setUpSettings() {
-    // This form will never be reached
+    // This form will never be reached.
     return;
   }
 
@@ -56,7 +64,7 @@ EOF;
    * Final installer step: Configure site.
    */
   protected function setUpSite() {
-    // This form will never be reached
+    // This form will never be reached.
     return;
   }