Use correct return value

[MAILPOET-2320]

lib/Models/Model.php

@@ -130,6 +130,9 @@ class Model extends \Sudzy\ValidModel {
     parent::__construct($validator);
   }
 
+  /**
+   * @return bool|static
+   */
   static function create() {
     return parent::create();
   }

lib/Models/NewsletterOption.php

@@ -3,6 +3,12 @@ namespace MailPoet\Models;
 
 if (!defined('ABSPATH')) exit;
 
+/**
+ * @property int $newsletter_id
+ * @property int $option_field_id
+ * @property string $value
+ * @property string $updated_at
+ */
 class NewsletterOption extends Model {
   public static $_table = MP_NEWSLETTER_OPTION_TABLE;
 

lib/Models/NewsletterPost.php

@@ -3,6 +3,11 @@ namespace MailPoet\Models;
 
 if (!defined('ABSPATH')) exit;
 
+/**
+ * @property int $newsletter_id
+ * @property int $post_id
+ * @property string $updated_at
+ */
 class NewsletterPost extends Model {
   public static $_table = MP_NEWSLETTER_POSTS_TABLE;
 

lib/Models/NewsletterSegment.php

@@ -3,6 +3,11 @@ namespace MailPoet\Models;
 
 if (!defined('ABSPATH')) exit;
 
+/**
+ * @property int $newsletter_id
+ * @property int $segment_id
+ * @property string $updated_at
+ */
 class NewsletterSegment extends Model {
   public static $_table = MP_NEWSLETTER_SEGMENT_TABLE;
 }

lib/Models/StatisticsOpens.php

@@ -3,6 +3,11 @@ namespace MailPoet\Models;
 
 if (!defined('ABSPATH')) exit;
 
+/**
+ * @property int $newsletter_id
+ * @property int $subscriber_id
+ * @property int $queue_id
+ */
 class StatisticsOpens extends Model {
   public static $_table = MP_STATISTICS_OPENS_TABLE;
 

lib/Models/StatisticsUnsubscribes.php

@@ -3,6 +3,11 @@ namespace MailPoet\Models;
 
 if (!defined('ABSPATH')) exit;
 
+/**
+ * @property int $newsletter_id
+ * @property int $subscriber_id
+ * @property int $queue_id
+ */
 class StatisticsUnsubscribes extends Model {
   public static $_table = MP_STATISTICS_UNSUBSCRIBES_TABLE;
 

lib/Models/StatsNotification.php

@@ -2,6 +2,11 @@
 
 namespace MailPoet\Models;
 
+/**
+ * @property int $newsletter_id
+ * @property int $task_id
+ * @property string $updated_at
+ */
 class StatsNotification extends Model {
   public static $_table = MP_STATS_NOTIFICATIONS_TABLE;
 

lib/Models/SubscriberIP.php

@@ -3,6 +3,9 @@ namespace MailPoet\Models;
 
 if (!defined('ABSPATH')) exit;
 
+/**
+ * @property string $ip
+ */
 class SubscriberIP extends Model {
   public static $_table = MP_SUBSCRIBER_IPS_TABLE;
 }