There is no need to check if `repository_ref` is present as:
```
@repository_ref = if repository_ref.present?
repository_ref
else
nil
end
```
is as same as doing:
```
@repository_ref = repository_ref
```
Gitlab::SearchResults and Gitlab::ProjectSearchResults are libraries we
are going to use to get search results based on query, enitity type and
pagination.
It will allow us to get only issues from project #23 where title or
description includes 'foo'.
Ex:
search_results = Gitlab::ProjectSearchResults.new(project.id, 'foo', 'issues')
search_results.objects => # [<Issues #23>, <Issues #34>]
search_results.issues_count => 2
search_results.total_count => 12 (it includes results from comments and
merge requests too)
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
