code: def test_from_save_pretrained(self):
      pass
  
imports: import tempfile
  import torch
  from diffusers import PNDMScheduler
  from .test_schedulers import SchedulerCommonTest
label_desc: Use image node_id 3 for calling the PNDMSchedulerTest obj's underlying member method code with example usage: obj.test_from_save_pretrained() without return types