def METHOD_NAME(args):
  assert len(args) in [0,1]
  if (len(args) == 0):
    n_trials = 10
  else:
    n_trials = int(args[0])
    print("n_trials:", n_trials)
    assert n_trials >= 0
  def exercise_array_alignment(f):
    for n in range(2,6):
      exercise_given_members_size(array_alignment=f, n=n, n_trials=n_trials)
    exercise_exceptions(array_alignment=f)
  exercise_array_alignment(fable.equivalence.array_alignment)
  if (fable.ext is not None):
    exercise_array_alignment(fem_array_alignment)
  exercise_cluster_unions()
  print("OK")