{"action":"opened","issue":{"url":"https://api.github.com/repos/fruux/sabre-dav/issues/659","labels_url":"https://api.github.com/repos/fruux/sabre-dav/issues/659/labels{/name}","comments_url":"https://api.github.com/repos/fruux/sabre-dav/issues/659/comments","events_url":"https://api.github.com/repos/fruux/sabre-dav/issues/659/events","html_url":"https://github.com/fruux/sabre-dav/issues/659","id":78473560,"number":659,"title":"Call to undefined method getETag()","user":{"login":"jurgenhaas","id":1475675,"avatar_url":"https://avatars.githubusercontent.com/u/1475675?v=3","gravatar_id":"","url":"https://api.github.com/users/jurgenhaas","html_url":"https://github.com/jurgenhaas","followers_url":"https://api.github.com/users/jurgenhaas/followers","following_url":"https://api.github.com/users/jurgenhaas/following{/other_user}","gists_url":"https://api.github.com/users/jurgenhaas/gists{/gist_id}","starred_url":"https://api.github.com/users/jurgenhaas/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jurgenhaas/subscriptions","organizations_url":"https://api.github.com/users/jurgenhaas/orgs","repos_url":"https://api.github.com/users/jurgenhaas/repos","events_url":"https://api.github.com/users/jurgenhaas/events{/privacy}","received_events_url":"https://api.github.com/users/jurgenhaas/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-05-20T10:45:44Z","updated_at":"2015-05-20T10:45:44Z","closed_at":null,"body":"I know this has been reported and \"fixed\" in #428 but I found another occurance in the 2.x branch. In Sabre\\DAV\\Server.php line 1347 there is ```$etag = $node->getETag();``` and in my case the $node is an instance of SimpleCollection which doesn't implement that method.\r\n\r\nShould the Method getETag be implemented in Node and by default return NULL?"}}