def update(self, friendly_name=values.unset, unique_name=values.unset,<EOL>actions=values.unset, actions_url=values.unset):
return self._proxy.update(<EOL>friendly_name=friendly_name,<EOL>unique_name=unique_name,<EOL>actions=actions,<EOL>actions_url=actions_url,<EOL>)<EOL>
Update the TaskInstance

:param unicode friendly_name: A user-provided string that identifies this resource. It is non-unique and can up to 255 characters long.
:param unicode unique_name: A user-provided string that uniquely identifies this resource as an alternative to the sid. Unique up to 64 characters long.
:param dict actions: A user-provided JSON object encoded as a string to specify the actions for this task. It is optional and non-unique.
:param unicode actions_url: User-provided HTTP endpoint where from the assistant fetches actions

:returns: Updated TaskInstance
:rtype: twilio.rest.preview.understand.assistant.task.TaskInstance