'Update the CallInstance
:param unicode url: URL that returns TwiML
:param unicode method: HTTP method to use to fetch TwiML
:param CallInstance.UpdateStatus status: Status to update the Call with
:param unicode fallback_url: Fallback URL in case of error
:param unicode fallback_method: HTTP Method to use with FallbackUrl
:param unicode status_callback: Status Callback URL
:param unicode status_callback_method: HTTP Method to use with StatusCallback
:returns: Updated CallInstance
:rtype: twilio.rest.api.v2010.account.call.CallInstance'

def update(self, url=values.unset, method=values.unset, status=values.unset, fallback_url=values.unset, fallback_method=values.unset, status_callback=values.unset, status_callback_method=values.unset):

    return self._proxy.update(url=url, method=method, status=status, fallback_url=fallback_url, fallback_method=fallback_method, status_callback=status_callback, status_callback_method=status_callback_method)
