Client
sends item to mover for repairing & counts the no. of items recieved.
stops after sending 100 items & also asserts if count of repaired is greater than broken.
Mover
forwards items recieved from client to repairService
forwards items from repairService to the client.
RepairService
repairs an item recieved with (3/4) success propability in case it was broken and sends it back.