$response = $http->post('http://your-app.com/oauth/token', [     'form_params' => [         'grant_type' => 'password',         'client_id' => 'client-id',         'client_secret' => 'client-secret',         'username' => 'taylor@laravel.com',         'password' => 'my-password',         'scope' => '',     ], ]); 

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