public function get_history($type = '')
 {
     // FUTURE v1.1 query for estimates and invoices too
     return SI_Record::get_records_by_association($this->ID);
 }
 public function get_history($type = '')
 {
     return SI_Record::get_records_by_association($this->ID);
 }
 public function get_time_entries($args = array())
 {
     return SI_Record::get_records_by_association($this->ID);
 }