Within an interpolation, evaluation, or escaping, remove HTML escaping
        that had been previously added.

def unescape(self):
        """
        Within an interpolation, evaluation, or escaping, remove HTML escaping
        that had been previously added.
        """
        for i, k in enumerate(self._html_escape_table):
            v = self._html_escape_table[k]
            self.obj = self.obj.replace(v, k)

        return self._wrap(self.obj)