public function execute()
{
$query = new PhabricatorEdgeQuery();
$edge_type = PhabricatorEdgeConfig::TYPE_OBJECT_HAS_SUBSCRIBER;
$query->withSourcePHIDs($this->objectPHIDs);
$query->withEdgeTypes(array($edge_type));
if ($this->subscriberPHIDs) {
$query->withDestinationPHIDs($this->subscriberPHIDs);
}
$edges = $query->execute();
$results = array_fill_keys($this->objectPHIDs, array());
foreach ($edges as $src => $edge_types) {
foreach ($edge_types[$edge_type] as $dst => $data) {
$results[$src][] = $dst;
}
}
return $results;
}
