code: def test_betas(self):
      for beta_start, beta_end in zip([0.0001, 0.001], [0.002, 0.02]):
          self.check_over_configs(
              beta_start=beta_start, beta_end=beta_end
          )
  
imports: import inspect
  import tempfile
  import unittest
  from typing import Dict, List, Tuple
  from diffusers import FlaxDDIMScheduler, FlaxDDPMScheduler, FlaxPNDMScheduler
  from diffusers.utils import is_flax_available
  from diffusers.utils.testing_utils import require_flax
label_desc: Use image node_id 10 for calling the FlaxPNDMSchedulerTest obj's underlying member method code with example usage: obj.test_betas() without return types