def is_verified(self):
        """Retrieves the verification status of the incident/incidents from the
        output response

        Returns:
            verified(namedtuple): List of named tuples of verification status
            of the incident/incidents
        """
        resource_list = self.traffic_incident()
        verified = namedtuple('verified', 'verified')
        if len(resource_list) == 1 and resource_list[0] is None:
            return None
        else:
            try:
                return [verified(resource['verified'])
                        for resource in resource_list]
            except (KeyError, TypeError):
                return [verified(resource['Verified'])
                        for resource in resource_list]
Retrieves the verification status of the incident/incidents from the
        output response

        Returns:
            verified(namedtuple): List of named tuples of verification status
            of the incident/incidents