public function __construct($table_column, $nice_name, $nullable, $default_value, $timezone = NULL, $date_format = NULL, $time_format = NULL, $pretty_date_format = NULL, $pretty_time_format = NULL)
{
parent::__construct($table_column, $nice_name, $nullable, $default_value, $timezone, $date_format, $time_format, $pretty_date_format, $pretty_time_format);
}
