private function addLineItemParticipants()
{
$participant = new CRM_Event_DAO_Participant();
$participant->query("INSERT INTO civicrm_line_item (`entity_table`, `entity_id`, contribution_id, `price_field_id`, `label`, `qty`, `unit_price`, `line_total`, `participant_count`, `price_field_value_id`, `financial_type_id`)\nSELECT 'civicrm_participant', cp.id, cpp.contribution_id, cpfv.price_field_id, cpfv.label, 1, cpfv.amount, cpfv.amount as line_total, 0, cpfv.id, cpfv.financial_type_id FROM civicrm_participant cp LEFT JOIN civicrm_participant_payment cpp ON cpp.participant_id = cp.id\nLEFT JOIN civicrm_price_set_entity cpe ON cpe.entity_id = cp.event_id LEFT JOIN civicrm_price_field cpf ON cpf.price_set_id = cpe.price_set_id LEFT JOIN civicrm_price_field_value cpfv ON cpfv.price_field_id = cpf.id WHERE cpfv.label = cp.fee_level");
}