Remove Certificate::__toString(), Command validation failure warning -> error

Author: remotelyliving

Certificate.php

@@ -39,14 +39,6 @@ public function __construct($certificatePEM, self $issuerCertificate = null)
         $this->issuerCertificate = $issuerCertificate;
     }
 
-    /**
-     * @return string
-     */
-    public function __toString()
-    {
-        return $this->certificatePEM;
-    }
-
     /**
      * @return Certificate[]
      */