'Create a multi-line Unicode string (end of line is "\n") which
represents all datas.
>>> a = RootMetadata()
>>> a.copyright = unicode("Â© Hachoir", "UTF-8")
>>> print repr(unicode(a))
u\'Metadata:\n- Copyright: \xa9 Hachoir\'
@see __str__() and exportPlaintext()'

def __unicode__(self):

    return '\n'.join(self.exportPlaintext())
