Add missing property annotations used in tests

[MAILPOET-3235]

lib/Models/DynamicSegment.php

@@ -13,6 +13,7 @@ use MailPoet\WP\Functions as WPFunctions;
  * @property string $description
  * @property string $createdAt
  * @property string $updatedAt
+ * @property string|null $deletedAt
  */
 class DynamicSegment extends MailPoetSegment {
 

lib/Models/Form.php

@@ -10,6 +10,7 @@ use MailPoet\WP\Functions as WPFunctions;
  * @property string|array $body
  * @property string $name
  * @property string $status
+ * @property string|null $deletedAt
  */
 
 class Form extends Model {

lib/Models/Newsletter.php

@@ -37,6 +37,8 @@ use MailPoet\WP\Functions as WPFunctions;
  * @property bool|null $isScheduled
  * @property string|null $scheduledAt
  * @property string $gaCampaign
+ * @property string $event
+ * @property string $unsubscribeToken
  */
 
 class Newsletter extends Model {

lib/Models/SendingQueue.php

@@ -20,6 +20,7 @@ use MailPoet\WP\Functions as WPFunctions;
  * @property string|null $deletedAt
  * @property string $scheduledAt
  * @property string $status
+ * @property array|string|null $meta
  */
 
 class SendingQueue extends Model {

lib/Tasks/Sending.php

@@ -18,6 +18,8 @@ use MailPoetVendor\Carbon\Carbon;
  * @property string $newsletterRenderedSubject
  * @property string|array $newsletterRenderedBody
  * @property bool $nonExistentColumn
+ * @property string $scheduledAt
+ * @property int $priority
  */
 class Sending {
   const TASK_TYPE = 'sending';