The CategoryManager is responsible to deal with the notification categories
Inheritance: implements Fenos\Notifynder\Contracts\NotifynderCategory
 /** @test */
 function it_add_a_category_id_to_the_builder_givin_the_name_of_it(CategoryManager $category, NotificationCategory $categoryModel)
 {
     $name = 'category.name';
     $category_id = 1;
     $category->findByName($name)->shouldBeCalled()->willReturn($categoryModel);
     $categoryModel->getAttribute('id')->willReturn($category_id);
     $this->category($name)->shouldReturnAnInstanceOf(NotifynderBuilder::class);
 }