code: def test_time_indices(self):
      for t in [1, 10, 49]:
          self.check_over_forward(time_step=t)
  
imports: import torch
  from diffusers import DDIMScheduler
  from .test_schedulers import SchedulerCommonTest
label_desc: Use image node_id 12 for calling the DDIMSchedulerTest obj's underlying member method code with example usage: obj.test_time_indices() without return types