public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('username', TextType::class, [
                'label' => 'Nazwa użytkownika',
                'required' => true
            ])
            ->add('password', PasswordType::class, [
                'label' => 'Hasło'
            ])
            ->add('email', EmailType::class)
            ->add('firstName', TextType::class, [
                'label' => 'Imie',
                'required' => false
            ])
            ->add('lastName', TextType::class, [
                'label' => 'Nazwisko',
                'required' => false
            ])
            ->add('roles', ChoiceType::class, [
                'label' => 'Uprawnienia',
                'multiple' => true,
                'choices' => [
                    'Administrator' => 'ROLE_ADMIN',
                    'Użytkownik' => 'ROLE_USER'
                ]
            ])
            ->add('gender', ChoiceType::class, [
                'label' => 'Płeć',
                'choices' => [
                    'Kobieta' => User::GENDER_FEMALE,
                    'Mężczyzna' => User::GENDER_MALE
                ]
            ]);
    }