Replaces a reference to an attribute with the value of the attribute.

        Args:
            match (re.match object): A match object containing a match to a reference to an attribute.

def _resolve_attribute_match(self, match):
        """Replaces a reference to an attribute with the value of the attribute.

        Args:
            match (re.match object): A match object containing a match to a reference to an attribute.

        """
        if match.group(1) == 'cluster':
            return str(self.cluster_id)

        return self.get(match.group(1), match.group(0))