{"action":"opened","issue":{"url":"https://api.github.com/repos/domokit/mojo/issues/630","labels_url":"https://api.github.com/repos/domokit/mojo/issues/630/labels{/name}","comments_url":"https://api.github.com/repos/domokit/mojo/issues/630/comments","events_url":"https://api.github.com/repos/domokit/mojo/issues/630/events","html_url":"https://github.com/domokit/mojo/issues/630","id":127550342,"number":630,"title":"Error when using Union type in Java","user":{"login":"aghassemi","id":2099009,"avatar_url":"https://avatars.githubusercontent.com/u/2099009?v=3","gravatar_id":"","url":"https://api.github.com/users/aghassemi","html_url":"https://github.com/aghassemi","followers_url":"https://api.github.com/users/aghassemi/followers","following_url":"https://api.github.com/users/aghassemi/following{/other_user}","gists_url":"https://api.github.com/users/aghassemi/gists{/gist_id}","starred_url":"https://api.github.com/users/aghassemi/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/aghassemi/subscriptions","organizations_url":"https://api.github.com/users/aghassemi/orgs","repos_url":"https://api.github.com/users/aghassemi/repos","events_url":"https://api.github.com/users/aghassemi/events{/privacy}","received_events_url":"https://api.github.com/users/aghassemi/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2016-01-19T22:08:01Z","updated_at":"2016-01-19T22:08:01Z","closed_at":null,"body":"I have a union type in my mojom file, the generated Java code includes lines such as \r\n```\r\n        mTag_ = None;\r\n```\r\n\r\nbut compiler complains that it can not find `None` symbol. Is there something I am not importing?\r\n```\r\n/usr/local/google/home/aghassemi/git/v23/release/mojo/discovery/java/generated-src/io/v/mojo/discovery/Update.java:33: error: cannot find symbol\r\n        mTag_ = None;\r\n\r\n```\r\n\r\n@qsr \r\n"}}