From 13ea1f8a1b7edc0d3cdb5e9b65abe31109d34511 Mon Sep 17 00:00:00 2001
From: Lena Orobei <oorobei@magento.com>
Date: Fri, 14 Jun 2019 10:05:33 -0500
Subject: [PATCH] magento/graphql-ce#741: Add extension point to set custom
 parameters to Query Context object - added extended docs

---
 app/code/Magento/CustomerGraphQl/etc/graphql/di.xml        | 2 +-
 .../Model/Query/ContextParametersProcessorInterface.php    | 7 ++++++-
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/app/code/Magento/CustomerGraphQl/etc/graphql/di.xml b/app/code/Magento/CustomerGraphQl/etc/graphql/di.xml
index 961eab2a8320..cb4ab0b7b27f 100644
--- a/app/code/Magento/CustomerGraphQl/etc/graphql/di.xml
+++ b/app/code/Magento/CustomerGraphQl/etc/graphql/di.xml
@@ -20,4 +20,4 @@
             </argument>
         </arguments>
     </type>
-</config>
\ No newline at end of file
+</config>
diff --git a/app/code/Magento/GraphQl/Model/Query/ContextParametersProcessorInterface.php b/app/code/Magento/GraphQl/Model/Query/ContextParametersProcessorInterface.php
index e79ffa7f00c7..bcea6383e7fb 100644
--- a/app/code/Magento/GraphQl/Model/Query/ContextParametersProcessorInterface.php
+++ b/app/code/Magento/GraphQl/Model/Query/ContextParametersProcessorInterface.php
@@ -8,7 +8,12 @@
 namespace Magento\GraphQl\Model\Query;
 
 /**
- * Extension point for adding custom parameters to context object
+ * Adding custom parameters to context object:
+ *
+ * - Add new contextParametersProcessors item to ContextFactory in the di.xml.
+ * - Class must extend ContextParametersProcessorInterface.
+ * - Implement execute method which adds additional data to the context though extension attributes.
+ * - This data will be present in each resolver.
  */
 interface ContextParametersProcessorInterface
 {