fix

lib/abstractfactory/mainabstractfactory.php

@@ -0,0 +1,20 @@
+<?php
+
+
+namespace Bx\Null\AbstractFactory;
+
+
+use Wt\Core\AbstractFactory\AAbstractFactory;
+use Bx\Null\Factory\NullFactory;
+
+class MainAbstractFactory extends AAbstractFactory
+{
+    /**
+     * @return NullFactory
+     */
+    public function getNullFactory()
+    {
+        return $this->resolveFactory(NullFactory::class);
+    }
+
+}