public async Task <Issue> CreateAsync(Guid repositoryId, string title, string text = null)
{
var issue = new Issue(GuidGenerator.Create(), repositoryId, title, text);
if (await _issueRepository.AnyAsync(issue => issue.Title == title))
{
throw new BusinessException("IssueTracking:IssueWithSameTitleExists");
}
return(new Issue(GuidGenerator.Create(), repositoryId, title, text));
}