protected function getObjectCreateCancelURI($object)
 {
     $parent = $this->getParentProject();
     $milestone = $this->getMilestoneProject();
     if ($parent || $milestone) {
         $id = nonempty($parent, $milestone)->getID();
         return "/project/subprojects/{$id}/";
     }
     return parent::getObjectCreateCancelURI($object);
 }
 protected function getObjectCreateCancelURI($object)
 {
     $parent = $this->getParentProject();
     if ($parent) {
         $id = $parent->getID();
         return "/project/subprojects/{$id}/";
     }
     $milestone = $this->getMilestoneProject();
     if ($milestone) {
         $id = $milestone->getID();
         return "/project/milestones/{$id}/";
     }
     return parent::getObjectCreateCancelURI($object);
 }