Set correct property and return types

Author: acrobat

lib/Github/Api/Issue/Labels.php

@@ -167,7 +167,7 @@ public function replace($username, $repository, $issue, array $params)
      * @param string $issue
      * @param string $label
      *
-     * @return null
+     * @return array|string
      */
     public function remove($username, $repository, $issue, $label)
     {
@@ -183,7 +183,7 @@ public function remove($username, $repository, $issue, $label)
      * @param string $repository
      * @param string $issue
      *
-     * @return null
+     * @return array|string
      */
     public function clear($username, $repository, $issue)
     {

lib/Github/Api/Issue/Milestones.php

@@ -114,7 +114,7 @@ public function update($username, $repository, $id, array $params)
      * @param string $repository
      * @param int    $id
      *
-     * @return null
+     * @return array|string
      */
     public function remove($username, $repository, $id)
     {

lib/Github/Api/Organization/Hooks.php

@@ -87,7 +87,7 @@ public function update($organization, $id, array $params)
      * @param string $organization
      * @param int    $id
      *
-     * @return null
+     * @return array|string
      */
     public function ping($organization, $id)
     {
@@ -102,7 +102,7 @@ public function ping($organization, $id)
      * @param string $organization
      * @param int    $id
      *
-     * @return null
+     * @return array|string
      */
     public function remove($organization, $id)
     {

lib/Github/HttpClient/Builder.php

@@ -38,7 +38,7 @@ class Builder
     private $pluginClient;
 
     /**
-     * @var MessageFactory
+     * @var RequestFactory
      */
     private $requestFactory;
 
@@ -62,7 +62,7 @@ class Builder
     /**
      * This plugin is special treated because it has to be the very last plugin.
      *
-     * @var Plugin\CachePlugin
+     * @var Plugin\CachePlugin|null
      */
     private $cachePlugin;
 

lib/Github/HttpClient/Message/ResponseMediator.php

@@ -33,7 +33,7 @@ public static function getContent(ResponseInterface $response)
     public static function getPagination(ResponseInterface $response)
     {
         if (!$response->hasHeader('Link')) {
-            return;
+            return null;
         }
 
         $header = self::getHeader($response, 'Link');