function __destruct()
 {
     unset($this->project_status_folder);
     unset($this->project_status_id);
     unset($this->project_id);
     parent::__destruct();
 }
 function __destruct()
 {
     unset($this->sample_folder);
     unset($this->sample_id);
     parent::__destruct();
 }
 function __destruct()
 {
     unset($this->group_folder);
     unset($this->group_id);
     parent::__destruct();
 }
 function __destruct()
 {
     unset($this->organisation_unit_folder);
     unset($this->organisation_unit_id);
     parent::__destruct();
 }
 function __destruct()
 {
     unset($this->user_folder);
     unset($this->user_id);
     parent::__destruct();
 }
 function __destruct()
 {
     parent::__destruct();
 }