/**
* Return only the open tickets that current user can see (if not member of owner company private
* tickets will be excluded)
*
* @param void
* @return array
*/
function getOpenTickets() {
if (!plugin_active('tickets')) return null;
if(logged_user()->isMemberOfOwnerCompany()) {
return $this->getAllOpenTickets(); // members of owner company can view all tickets
} // if
if(is_null($this->open_tickets)) {
$this->open_tickets = ProjectTickets::getOpenProjectTickets($this, false);
} // if
return $this->open_tickets;
} // getOpenTickets
