'Create an InstanceResource via a POST to the List Resource
:param dict body: Dictionary of POST data'

def create_instance(self, body):

    (resp, instance) = self.request('POST', self.uri, data=transform_params(body))
    if (resp.status_code not in (200, 201)):
        raise TwilioRestException(resp.status_code, self.uri, 'Resource    not    created')
    return self.load_instance(instance)
