fix

lib/abstractfactory/mainabstractfactory.php

@@ -14,7 +14,7 @@ class MainAbstractFactory extends AAbstractFactory
      */
     public function getNullFactory()
     {
-        return $this->resolveFactory(NullFactory::class);
+        return $this->getFactoryInstance(NullFactory::class);
     }
 
 }

lib/factory/nullormfactory.php

@@ -46,7 +46,7 @@ class NullFactory extends AORMFactory
      * @param array $select
      * @param null $limit
      * @param null $offset
-     * @return NullCollection
+     * @return NullCollection|NullEntity[]
      */
     public function getCollection($filter = [], $order = [], $select = [], $limit = null, $offset = null)
     {
@@ -55,7 +55,7 @@ class NullFactory extends AORMFactory
 
     /**
      * @param array $arIds
-     * @return NullCollection
+     * @return NullCollection|NullEntity[]
      */
     public function getEntityByIds(array $arIds)
     {