fix stan errors

app/Nova/Resources/CurrencyRate.php

@@ -5,7 +5,6 @@ namespace App\Nova\Resources;
 use App\Models\CurrencyRate as ModelsCurrencyRate;
 use App\Nova\Resource;
 use App\Nova\Resources\CurrencyRate\CurrencyRateAuth;
-use Illuminate\Http\Request;
 use Laravel\Nova\Fields\ID;
 use Laravel\Nova\Fields\Select;
 use Laravel\Nova\Fields\Text;
@@ -32,7 +31,7 @@ class CurrencyRate extends Resource
     /**
      * The columns that should be searched.
      *
-     * @var array
+     * @var array<int, string>
      */
     public static $search = [
         'id',
@@ -50,7 +49,7 @@ class CurrencyRate extends Resource
      * Get the fields displayed by the resource.
      *
      * @param  \Laravel\Nova\Http\Requests\NovaRequest  $request
-     * @return array
+     * @return array<int, \Laravel\Nova\Fields\Field>
      */
     public function fields(NovaRequest $request)
     {
@@ -78,48 +77,4 @@ class CurrencyRate extends Resource
                 ->rules('required', 'numeric'),
         ];
     }
-
-    /**
-     * Get the cards available for the request.
-     *
-     * @param  \Laravel\Nova\Http\Requests\NovaRequest  $request
-     * @return array
-     */
-    public function cards(NovaRequest $request)
-    {
-        return [];
-    }
-
-    /**
-     * Get the filters available for the resource.
-     *
-     * @param  \Laravel\Nova\Http\Requests\NovaRequest  $request
-     * @return array
-     */
-    public function filters(NovaRequest $request)
-    {
-        return [];
-    }
-
-    /**
-     * Get the lenses available for the resource.
-     *
-     * @param  \Laravel\Nova\Http\Requests\NovaRequest  $request
-     * @return array
-     */
-    public function lenses(NovaRequest $request)
-    {
-        return [];
-    }
-
-    /**
-     * Get the actions available for the resource.
-     *
-     * @param  \Laravel\Nova\Http\Requests\NovaRequest  $request
-     * @return array
-     */
-    public function actions(NovaRequest $request)
-    {
-        return [];
-    }
 }