public Issue addIssue(Issue issue) {
        Repository repo = null;
        if (issue != null) {
            repo = issue.repository();
            if (repo == null) {
                repo = repoFromUrl(issue.htmlUrl());
            }
        }
        return addIssue(repo, issue);
    }
Add issue to store

@param issue
@return issue
app/src/main/java/com/github/pockethub/android/core/issue/IssueStore.java