Add doc blocks

cli/Valet/Drivers/ValetDriver.php

@@ -79,12 +79,12 @@ public static function assign(string $sitePath, string $siteName, string $uri):
      * Get the custom driver class from the site path, if one exists.
      *
      * @param  string  $sitePath
-     * @return string|null|void
+     * @return string|null
      */
-    public static function customSiteDriver(string $sitePath)
+    public static function customSiteDriver(string $sitePath): ?string
     {
         if (! file_exists($sitePath.'/LocalValetDriver.php')) {
-            return;
+            return null;
         }
 
         require_once $sitePath.'/LocalValetDriver.php';
@@ -119,6 +119,11 @@ public static function driversIn(string $path): array
         return $drivers;
     }
 
+    /**
+     * Get all of the specific drivers shipped with Valet.
+     *
+     * @return array
+     */
     public static function specificDrivers(): array
     {
         return array_map(function ($item) {
@@ -126,6 +131,11 @@ public static function specificDrivers(): array
         }, static::driversIn(__DIR__.'/Specific'));
     }
 
+    /**
+     * Get all of the custom drivers defined by the user locally.
+     *
+     * @return array
+     */
     public static function customDrivers(): array
     {
         return array_map(function ($item) {

tests/BaseApplicationTestCase.php

@@ -12,6 +12,11 @@ public function setUp(): void
         $this->setNullWriter();
     }
 
+    /**
+     * Prepare a test to run using the full application.
+     *
+     * @return void
+     */
     public function prepTestConfig()
     {
         require_once __DIR__.'/../cli/includes/helpers.php';
@@ -25,7 +30,12 @@ public function prepTestConfig()
         Configuration::writeBaseConfiguration();
     }
 
-    public function appAndTester()
+    /**
+     * Return an array with two items: the application instance and the ApplicationTester.
+     *
+     * @return array
+     */
+    public function appAndTester(): array
     {
         $app = require __DIR__.'/../cli/app.php';
         $app->setAutoExit(false);