public function getInverseTotalDocsGroupByLabel()
{
$docCounts = $this->getTotalDocsGroupByLabel();
$totalDocs = $this->getTotalDocs();
$docInverseCounts = array();
foreach ($docCounts as $key => $item) {
$docInverseCounts[$key] = $totalDocs - $item;
}
return $docInverseCounts;
}