diff --git a/.phpstorm.meta.php b/.phpstorm.meta.php
new file mode 100644
index 0000000..c87f4dc
--- /dev/null
+++ b/.phpstorm.meta.php
@@ -0,0 +1,36 @@
+<?php
+/** @see https://www.jetbrains.com/help/phpstorm/ide-advanced-metadata.html */
+
+namespace PHPSTORM_META {
+    override(\TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance(0), type(0));
+
+    // TYPO3 testing framework
+    // The accesible mock will be of type "self" as well as "MockObject" and "AccessibleObjectInterface"
+    override(
+        \TYPO3\TestingFramework\Core\BaseTestCase::getAccessibleMock(0),
+        map([
+            '' =>  '@|\PHPUnit\Framework\MockObject\MockObject|\TYPO3\TestingFramework\Core\AccessibleObjectInterface',
+        ])
+    );
+    override(
+        \TYPO3\TestingFramework\Core\BaseTestCase::getAccessibleMockForAbstractClass(0),
+        map([
+            '' =>  '@|\PHPUnit\Framework\MockObject\MockObject|\TYPO3\TestingFramework\Core\AccessibleObjectInterface',
+        ])
+    );
+
+    // Nimut testing framework
+    // The accesible mock will be of type "self" as well as "MockObject" and "AccessibleMockObjectInterface"
+    override(
+        \Nimut\TestingFramework\TestCase\AbstractTestCase::getAccessibleMock(0),
+        map([
+            '' =>  '@|\PHPUnit\Framework\MockObject\MockObject|\Nimut\TestingFramework\MockObject\AccessibleMockObjectInterface',
+        ])
+    );
+    override(
+        \Nimut\TestingFramework\TestCase\AbstractTestCase::getAccessibleMockForAbstractClass(0),
+        map([
+            '' =>  '@|\PHPUnit\Framework\MockObject\MockObject|\Nimut\TestingFramework\MockObject\AccessibleMockObjectInterface',
+        ])
+    );
+}