From 902dfd8b0856c673a0493ef6cbb4ed753f3eadc4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Beno=C3=AEt=20Blanchon?=
 <bblanchon@users.noreply.github.com>
Date: Wed, 13 Jan 2016 21:07:40 +0100
Subject: [PATCH] Updated FAQ (markdown)

---
 FAQ.md | 28 +++++++++++++++++++++++++++-
 1 file changed, 27 insertions(+), 1 deletion(-)

diff --git a/FAQ.md b/FAQ.md
index d6bc808..375315e 100644
--- a/FAQ.md
+++ b/FAQ.md
@@ -277,7 +277,33 @@ void sendJson(JsonVariant json) {
 }
 ```
 
-See issue [#195](https://github.com/bblanchon/ArduinoJson/issues/195)
+But in that case, you loose some specificities of the `JsonObject` class.
+In particular, you don't have the `containsKey()` method.
+If you need this function, you must cast the `JsonVariant` back to a `JsonObject&`.
+
+For instance:
+
+```c++
+void myFunction(JsonVariant variant)
+{
+    if (variant.is<JsonArray&>())
+    {
+        JsonArray& array = variant;
+        // ...
+    }
+    else if (variant.is<JsonObject&>()) 
+    {
+        JsonObject& object = variant;
+        // ...
+    }
+    else
+    {
+        // ...
+    }
+}
+```
+
+See issue [#195](https://github.com/bblanchon/ArduinoJson/issues/195) and [#196](https://github.com/bblanchon/ArduinoJson/issues/196)
 
 ### What are the differences between `StaticJsonBuffer` and `DynamicJsonBuffer`?