def date_line_to_text(self, date_line):
<EOL>if date_line._text is not None:<EOL><INDENT>return date_line._text<EOL><DEDENT>else:<EOL><INDENT>return date_utils.unicode_strftime(date_line.date, self.date_format)<EOL><DEDENT>
Return the textual representation of the given :class:`~taxi.timesheet.lines.DateLine` instance. The date
format is set by the `date_format` parameter given when instanciating the parser instance.