refactor: fix code with dead code prepared sets

Author: Artur Weigandt

.rector.php

@@ -12,7 +12,10 @@
     // uncomment to reach your current PHP version
     //->withPhpSets()
     ->withPhp74Sets()
+    ->withPhpVersion(70400)
     ->withTypeCoverageLevel(1)
-    ->withDeadCodeLevel(0)
     ->withCodeQualityLevel(0)
+    ->withPreparedSets(
+        true
+    )
 ;

src/Redmine/Api/CustomField.php

@@ -23,7 +23,7 @@ class CustomField extends AbstractApi
     /**
      * @var null|array<int,string>
      */
-    private $customFieldNames = null;
+    private $customFieldNames;
 
     /**
      * List custom fields.

src/Redmine/Api/Group.php

@@ -29,7 +29,7 @@ class Group extends AbstractApi
     /**
      * @var null|array<int,string>
      */
-    private $groupNames = null;
+    private $groupNames;
 
     /**
      * List groups.

src/Redmine/Api/IssueStatus.php

@@ -23,7 +23,7 @@ class IssueStatus extends AbstractApi
     /**
      * @var array<int,string>
      */
-    private $issueStatusNames = null;
+    private $issueStatusNames;
 
     /**
      * List issue statuses.

src/Redmine/Api/Project.php

@@ -30,7 +30,7 @@ class Project extends AbstractApi
     /**
      * @var null|array<int,string>
      */
-    private $projectNames = null;
+    private $projectNames;
 
     /**
      * List projects.

src/Redmine/Api/Role.php

@@ -25,7 +25,7 @@ class Role extends AbstractApi
     /**
      * @var null|array<int,string>
      */
-    private $roleNames = null;
+    private $roleNames;
 
     /**
      * List roles.

src/Redmine/Api/TimeEntryActivity.php

@@ -23,7 +23,7 @@ class TimeEntryActivity extends AbstractApi
     /**
      * @var null|array<string>
      */
-    private $timeEntryActivityNames = null;
+    private $timeEntryActivityNames;
 
     /**
      * List time entry activities.

src/Redmine/Api/Tracker.php

@@ -23,7 +23,7 @@ class Tracker extends AbstractApi
     /**
      * @var null|array<int,string>
      */
-    private $trackerNames = null;
+    private $trackerNames;
 
     /**
      * List trackers.

src/Redmine/Api/User.php

@@ -29,7 +29,7 @@ class User extends AbstractApi
     /**
      * @var null|array<int,string>
      */
-    private $userLogins = null;
+    private $userLogins;
 
     /**
      * List users.

src/Redmine/Exception/UnexpectedResponseException.php

@@ -19,7 +19,7 @@ final class UnexpectedResponseException extends RuntimeException implements Redm
     /**
      * @var Response|null
      */
-    private $response = null;
+    private $response;
 
     public static function create(Response $response, ?Throwable $prev = null): self
     {