[change] (PHPLIB-300) Add description.

CHANGELOG.md

@@ -3,7 +3,6 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
-
 ## [1.2.7.2][1.2.7.2]
 
 ### Fix
@@ -15,6 +14,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) a
 
 ### Added
 *   TraceId property to payment and transactions.
+*   Description to zgReferenceId setter/getter.
 
 ## [1.2.7.1][1.2.7.1]
 

src/Resources/TransactionTypes/Authorization.php

@@ -204,6 +204,8 @@ protected function setExternalOrderId($externalOrderId): Authorization
     }
 
     /**
+     * Returns the reference Id of the insurance provider if applicable.
+     *
      * @return string|null
      */
     public function getZgReferenceId()
@@ -212,6 +214,8 @@ public function getZgReferenceId()
     }
 
     /**
+     * Sets the reference Id of the insurance provider.
+     *
      * @param string|null $zgReferenceId
      *
      * @return Authorization