public function getSections()
{
$added = array();
$sections = array();
foreach ($this->issues as $issue) {
foreach ($issue->getSections() as $section) {
if (in_array($section->getNumber(), $added)) {
// @todo handle within repository
continue;
}
$sections[] = $section;
$added[] = $section->getNumber();
}
}
return $sections;
}