/**
 * @Eccube\EntityExtension("Eccube\Entity\Product")
 */
trait ProductTrait
{
    /**
     * @ORM\Column(name="example_time", type="datetimetz", nullable=true)
     * @Eccube\FormAppend(
     *  auto_render=true,
     *  type="\Symfony\Component\Form\Extension\Core\Type\DateTimeType",
     *  options={
     *    "required": false,
     *    "label": "日時テスト",
     *    "input": "datetime",
     *    "format": "Y/m/d hh:mm",
     *    "placeholder": {"year":"年", "month": "月", "day": "日", "hour": "時", "minute": "分"}
     *  }
     * )
     */
    private $example_time;

   public function ゲット()
   public function セット()
}