class MyType extends AbstractType
{

    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
                ->add("name", null, [
                    "constraints" => new NotBlank(["groups" => ["Basic"]])
                ])
                ->add("phone", MyPhoneType::class, [
                    "constraints" => [
                        new NotBlank(["groups" => ["Basic"]]),
                        new PhoneNumber(["groups" => ["Strict"])
                    ]
                ])
                ->add("email", EmailType::class, [
                    "constraints" => [
                        new NotBlank(["groups" => ["Basic"]]),
                        new Email(["groups" => ["Strict"]]),
                    ],
                ])
            ;
    }

    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults([
            "validation_groups" => new GroupSequence(["Basic", "Strict"])
        ]);
    }
}