code: def _get_valid_config(self):
      return {
          "name": "step",
          "num_epochs": self._num_epochs,
          "values": [0.1, 0.01, 0.001, 0.0001],
      }
  
file_path: ClassyVision/test/optim_param_scheduler_step_test.py
imports: import copy
  import unittest
  from classy_vision.optim.param_scheduler import build_param_scheduler, StepParamScheduler
label_desc: Use image node_id 1 for calling the TestStepScheduler obj's underlying member method code with example usage: obj._get_valid_config() and returns: dict