def update(self, friendly_name=values.unset, attributes=values.unset,<EOL>date_created=values.unset, date_updated=values.unset,<EOL>created_by=values.unset):
return self._proxy.update(<EOL>friendly_name=friendly_name,<EOL>attributes=attributes,<EOL>date_created=date_created,<EOL>date_updated=date_updated,<EOL>created_by=created_by,<EOL>)<EOL>
Update the SessionInstance

:param unicode friendly_name: The human-readable name of this session.
:param unicode attributes: An optional string metadata field you can use to store any data you wish.
:param datetime date_created: The date that this resource was created.
:param datetime date_updated: The date that this resource was last updated.
:param unicode created_by: Identity of the session's creator.

:returns: Updated SessionInstance
:rtype: twilio.rest.messaging.v1.session.SessionInstance