Merge pull request #60 from achmadhadikurnia/chore/code-improvement

chore(improvement): add return type

src/Facades/Siasn.php

@@ -9,7 +9,7 @@
  */
 class Siasn extends Facade
 {
-    protected static function getFacadeAccessor()
+    protected static function getFacadeAccessor(): string
     {
         return \Kanekescom\Siasn\Api\Siasn::class;
     }