how to call route from controller in laravel code example

Example 1: laravel access controller method from another controller

// Include the other controller in this controller
use App\Http\Controllers\TasksController;

// Instantiate other controller class in this controller's method
$tasks_controller = new TasksController;
// Use other controller's method in this controller's method
$tasks_controller->postNotification($comment_content, $author);

Example 2: laravel route controller

use App\Http\Controllers\UserController;

Route::get('user/{id}', [UserController::class, 'show']);

Example 3: laravel create resource controller

php artisan make:controller PhotoController --resource --model=Photo

Example 4: laravel 8 routes namespace

Route::group(['namespace' => 'App\Http\Controllers', 'prefix' => 'admin',
 'as' => 'admin.', 'middleware' => ['auth:sanctum', 'verified']], function()
{
    Route::get('/dashboard', ['DashboardController', 'index']);
});