O:64:"MailPoetVendor\Symfony\Component\Validator\Mapping\ClassMetadata":11:{s:11:"constraints";a:0:{}s:18:"constraintsByGroup";a:0:{}s:17:"traversalStrategy";i:1;s:19:"autoMappingStrategy";i:0;s:7:"getters";a:0:{}s:13:"groupSequence";a:0:{}s:21:"groupSequenceProvider";b:0;s:7:"members";a:0:{}s:4:"name";s:40:"MailPoet\Entities\NewsletterOptionEntity";s:10:"properties";a:0:{}s:12:"defaultGroup";s:22:"NewsletterOptionEntity";}