text: #!/usr/bin/env python3
  
  import common
  import witness.api.witness_pb2 as witness_pb2
  import witness.api.witness_pb2_grpc as witness_pb2_grpc
  
  DEFAULT_TIMEOUT = 5  # seconds
  
  
  def start_timelapse(service_stub, sleep_for=2, fname=""):
      start_request = witness_pb2.StartTimelapseRequest()
      start_request.sleep_for = sleep_for
      start_reply = service_stub.StartTimelapse(start_request, DEFAULT_TIMEOUT)
      print(start_reply)
  
  
  if __name__ == '__main__':
      arg_parser = common.create_arg_parser()
      grpc_server, _ = common.services(arg_parser)
      service_stub = common.create_service(grpc_server)
      start_timelapse(service_stub)
  