public function up(): void 	{ 		Schema::create('rewards', function (Blueprint $table): void { 			$table->uuid('id')->primary(); 			$table->uuid('survey_id'); 			$table->tinyInteger('rank'); 			$table->json('description'); 			$table->timestamps();  			$table->index(Model::CREATED_AT);  			$table->foreign('survey_id')->references('id')->on('surveys')->cascadeOnDelete(); 		}); 	}