$out = fopen("php://output", 'w');
fputcsv($out, $this->columns, $this->separator, '"');
$this->row = 1;
$result = civicrm_api($this->_entity, 'Get', $this->_params);
$out = fopen("php://output", 'w');
fputcsv($out, $this->columns, $this->separator, '"');
$this->row = 1;
$result = civicrm_api($this->_entity, 'Get', $this->_params);