http://qiita.com/koher/items/bcc58c01c6ff2ece658f?utm_source=Qiita%E3%83%8B%E3%83%A5%E3%83%BC%E3%82%B9&utm_campaign=5b8a1c0386-Qiita_newsletter_261_24_05_2017&utm_medium=email&utm_term=0_e44feaa081-5b8a1c0386-33468837
https://blog.jetbrains.com/jp/2017/05/18/767