code: def _get_valid_config(self):
      return {"name": "linear", "start_value": 0.0, "end_value": 0.1}
  
file_path: ClassyVision/test/optim_param_scheduler_linear_test.py
imports: import copy
  import unittest
  from classy_vision.optim.param_scheduler import build_param_scheduler, LinearParamScheduler
label_desc: Use image node_id 2 for calling the TestLienarScheduler obj's underlying member method code with example usage: obj._get_valid_config() and returns: dict