code: def _get_valid_long_config(self):
      return {
          "name": "composite",
          "schedulers": [
              {"name": "constant", "value": 0.1},
              {"name": "constant", "value": 0.2},
              {"name": "constant", "value": 0.3},
              {"name": "constant", "value": 0.4},
          ],
          "lengths": [0.2, 0.4, 0.1, 0.3],
      }
  
file_path: ClassyVision/test/optim_param_scheduler_composite_test.py
imports: import copy
  import unittest
  from classy_vision.optim.param_scheduler import build_param_scheduler
  from classy_vision.optim.param_scheduler.composite_scheduler import CompositeParamScheduler, IntervalScaling, UpdateInterval
label_desc: Use image node_id 1 for calling the TestCompositeScheduler obj's underlying member method code with example usage: obj._get_valid_long_config() and returns: dict