diff --git a/src/SerializationMapper.php b/src/SerializationMapper.php
index a7a00cc009af4b52f460013363e877bc6baa60ca..af257c96302d4c556bc10dc73cac0a4f42b37d79 100644
--- a/src/SerializationMapper.php
+++ b/src/SerializationMapper.php
@@ -227,14 +227,14 @@ final class SerializationMapper implements TypeFactoryInterface
     private function getResourceClassesOf(PHPClass $resource, string $typeFilter = null): array
     {
         $resources = [];
-        $ci = $this->classInfo[$resource->getFullName()];
+        $classInfo = $this->classInfo[$resource->getFullName()];
 
-        if (!$typeFilter || $ci->isType($typeFilter)) {
+        if (!$typeFilter || $classInfo->isType($typeFilter)) {
             $resources[$resource->getBaseName()] = $resource;
         }
 
         /** @var PHPClass $class */
-        foreach ($ci->iterateDescendants($typeFilter) as $class => $classInfo) {
+        foreach ($classInfo->iterateDescendants($typeFilter) as $class => $ci) {
             $resources[$class->getBaseName()] = $class;
         }
 
@@ -338,8 +338,6 @@ final class SerializationMapper implements TypeFactoryInterface
             }
         }
 
-//        printf("\n\n==================== %s ====================\n\n", $root->getResource()->getBaseName());
-
         $root = $this->classInfo[$this->serialization->getRoot()->getFullName()];
         $root->incRefCount(2);
         $root->setType(ClassInfo::INTERFACE);
@@ -378,7 +376,5 @@ final class SerializationMapper implements TypeFactoryInterface
                 }
             }
         } while ($changed);
-
-        //printf("After pruning:\n%s\n", json_encode($this->classInfo, \JSON_PRETTY_PRINT));
     }
 }