Resolve the PHPStan Level 1 errors

Author: matsuo

src/Supporting/FileMakerRelation.php

@@ -3,6 +3,7 @@
 namespace INTERMediator\FileMakerServer\RESTAPI\Supporting;
 
 use Iterator;
+use Exception;
 
 /**
  * Class FileMakerRelation is the record set of queried data. This class implements Iterator interface.

test/TestProvider.php

@@ -52,10 +52,11 @@ public function callRestAPI($params, $isAddToken, $method = 'GET', $request = NU
     /**
      * Override communication method.
      * @param $url
+     * @return string
      */
-    public function accessToContainer($url)
+    public function accessToContainer($url): string
     {
-
+        return '';
     }
 
     private function validResponse($input)