Add ->toUrl() to MDLicense

src/enums/MDLicense.php

@@ -211,6 +211,17 @@ public function toString():string {
 
     }
 
+    /**
+     * Returns string representation.
+     *
+     * @return string
+     */
+    public function toUrl():string {
+
+        return self::AVAILABLE_LICENSES[$this->toString()];
+
+    }
+
     /**
      * Returns the name of the current value in translation.
      *