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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def unicode_body(self, ignore_errors=True, fix_special_entities=True):
 """ Return response body as unicode string. """


        if not self._unicode_body:
            self._unicode_body = self.convert_body_to_unicode(
                body=self.body,
                bom=self.bom,
                charset=self.charset,
                ignore_errors=ignore_errors,
                fix_special_entities=fix_special_entities,
            )
        return self._unicode_body