public function down() 	{ 		Schema::table('order_items', function (Blueprint $table) { 			$table->float('price')->change(); 			$table->float('tax')->nullable()->change(); 			$table->float('discount_amount')->nullable()->change(); 			$table->float('total_price')->change(); 			$table->float('total_price_minus_discounts')->change(); 		}); 	}