getAllowedScopes example

private function validateContextHasPermission(Field $field, KeyValuePair $data, WriteParameterBag $parameters): void
    {
        /** @var WriteProtected $flag */
        $flag = $field->getFlag(WriteProtected::class);

        if ($flag->isAllowed($parameters->getContext()->getContext()->getScope())) {
            return;
        }

        $message = 'This field is write-protected.';
        $allowedOrigins = '';
        if ($flag->getAllowedScopes()) {
            $message .= ' (Got: "%s" scope and "%s" is required)';
            $allowedOrigins = implode(' or ', $flag->getAllowedScopes());
        }

        $violationList = new ConstraintViolationList();
        $violationList->add(
            new ConstraintViolation(
                sprintf(
                    $message,
                    $parameters->getContext()->getContext()->getScope(),
                    $allowedOrigins
                ),