git subrepo commit (merge) mailcow/src/mailcow-dockerized

subrepo: subdir:   "mailcow/src/mailcow-dockerized"
  merged:   "32243e56"
upstream: origin:   "https://github.com/mailcow/mailcow-dockerized.git"
  branch:   "master"
  commit:   "e2b4b6f6"
git-subrepo: version:  "0.4.3"
  origin:   "???"
  commit:   "???"
Change-Id: I51e2016ef5ab88a8b0bdc08551b18f48ceef0aa5
diff --git a/mailcow/src/mailcow-dockerized/data/web/inc/lib/vendor/twig/twig/doc/tests/null.rst b/mailcow/src/mailcow-dockerized/data/web/inc/lib/vendor/twig/twig/doc/tests/null.rst
new file mode 100644
index 0000000..9ed93f6
--- /dev/null
+++ b/mailcow/src/mailcow-dockerized/data/web/inc/lib/vendor/twig/twig/doc/tests/null.rst
@@ -0,0 +1,12 @@
+``null``
+========
+
+``null`` returns ``true`` if the variable is ``null``:
+
+.. code-block:: twig
+
+    {{ var is null }}
+
+.. note::
+
+    ``none`` is an alias for ``null``.