def METHOD_NAME(spec: benchmark_spec.BenchmarkSpec) -> List[sample.Sample]:
  """Measure the boot time for all VMs.
  Args:
    spec: The benchmark specification.
  Returns:
    An empty list (all boot samples will be added later).
  """
  samples = []
  samples.extend(GetTimeToSuspend(spec.vms))
  samples.extend(GetTimeToResume(spec.vms))
  return samples