Added missing doc block. (#79)

Author: Kevin Hellemun

bunq/sdk/context.py

@@ -486,6 +486,9 @@ def is_both_user_type_set(self):
         return self._user_company is not None and self._user_person is not None
 
     def refresh_user_context(self):
+        """
+        """
+
         self._set_user(self.__get_user_object())
         self.init_main_monetary_account()