From 923b275dc0f3094a1560937ec45e8acdf324e64d Mon Sep 17 00:00:00 2001
From: Alexey <petrovi4@gmail.com>
Date: Mon, 3 Oct 2016 19:53:06 +0300
Subject: [PATCH] Added value expression for ? operator "contain key"

---
 lib/node/valueExpression.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/node/valueExpression.js b/lib/node/valueExpression.js
index faad8033..2fa741a9 100644
--- a/lib/node/valueExpression.js
+++ b/lib/node/valueExpression.js
@@ -148,6 +148,7 @@ var ValueExpressionMixin = function() {
     at         : atMethod,
     contains   : binaryMethod('@>'),
     containedBy : binaryMethod('<@'),
+    containsKey : binaryMethod('?'),
     overlap    : binaryMethod('&&'),
     slice      : sliceMethod,
     cast       : castMethod,