https://yamamoworks.hatenablog.jp/entry/2010/12/14/%5BAzure%5D_SDK1_3%E3%81%A7%E3%81%AE%E3%80%8CSetConfigurationSettingPublisher_needs_to_be_called_before_FromConfigurationSetting_can_be_used%E3%80%8D%E5%9B%9E%E9%81%BF%E6%96%B9%E6%B3%952016-05-29T13:23:39+09:00