def update_instance(self, uid, body):
uri = "<STR_LIT>" % (self.uri, uid)<EOL>response, instance = self.request("<STR_LIT>", uri, data=body)<EOL>return self.load_instance(instance)<EOL>
Update an Model via a PUT request

:param str  uid:  String identifier for the list resource
:param dict body: Dictionary of items to PUT