'`True` if all the ``.diff_*`` attributes on this diff instance are
empty, implying that no differences were found.
Any subclass of ``_BaseDiff`` must have at least one ``.diff_*``
attribute, which contains a non-empty value if and only if some
difference was found between the two objects being compared.'

@property
def identical(self):

    return (not any((getattr(self, attr) for attr in self.__dict__ if attr.startswith('diff_'))))
