def cancel_spot_instance_requests(spot_instance_request_id)
response = Excon::Response.new
spot_request = self.data[:spot_requests][spot_instance_request_id]
unless spot_request
raise Fog::Compute::AWS::NotFound.new("The spot instance request ID '#{spot_instance_request_id}' does not exist")
end
spot_request['fault']['code'] = 'request-cancelled'
spot_request['state'] = 'cancelled'
response.body = {'spotInstanceRequestSet' => [{'spotInstanceRequestId' => spot_instance_request_id, 'state' => 'cancelled'}], 'requestId' => Fog::AWS::Mock.request_id}
response
end