start with Collection Class

src/Collection.php

@@ -0,0 +1,17 @@
+<?php
+
+namespace Pb;
+
+class Collection
+{
+    private $json;
+
+    public function __construct($data)
+    {
+        $this->json = $data;
+    }
+
+    public function authWithPassword(){
+        var_dump($this->json);
+    }
+}