Move login to separate function

Author: mrm

Atomx/MemoryAccountStore.php

@@ -27,12 +27,7 @@ public function __construct($username = null, $password = null, $apiBase = null)
     public function getToken()
     {
         if (is_null($this->token)) {
-            $response = $this->getLoginClient()->login([
-                'email' => $this->getUsername(),
-                'password' => $this->getPassword(),
-            ]);
-
-            $this->token = $response['auth_token'];
+            $this->storeToken($this->getTokenFromLogin());
         }
 
         return $this->token;
@@ -43,6 +38,16 @@ protected function getLoginClient()
         return new Login($this);
     }
 
+    protected function getTokenFromLogin()
+    {
+        $response = $this->getLoginClient()->login([
+            'email' => $this->getUsername(),
+            'password' => $this->getPassword(),
+        ]);
+
+        return $response['auth_token'];
+    }
+
     /**
      * @param string|null $token
      */