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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def update(self, *args, **kwargs):
 """Modifies the parameters and adds metadata for update results. Currently it does not support `PUT` method, which works as replacing the resource. This is somehow questionable in relation DB. """

        if request.method == 'PUT':
            logging.warning("Called not implemented resource method PUT")

        resource = super(JsonServerResource, self).update(*args, **kwargs)

        if resource:
            return resource
        else:
            return NOT_FOUND