code: def test_mc_collection_traceable(self) -> None:
      device = torch.device("cpu")
      zch_size = 20
      update_interval = 2
  
      embedding_configs = [
          EmbeddingBagConfig(
              name="t1",
              embedding_dim=8,
              num_embeddings=zch_size,
              feature_names=["f1", "f2"],
          ),
      ]
      mc_modules = {
          "t1": cast(
              ManagedCollisionModule,
              MCHManagedCollisionModule(
                  zch_size=zch_size,
                  device=device,
                  input_hash_size=2 * zch_size,
                  eviction_interval=update_interval,
                  eviction_policy=DistanceLFU_EvictionPolicy(),
              ),
          ),
      }
      mcc = ManagedCollisionCollection(
          managed_collision_modules=mc_modules,
          # pyre-ignore[6]
          embedding_configs=embedding_configs,
      )
  
      mcc = ManagedCollisionCollection(
          managed_collision_modules=mc_modules,
          # pyre-ignore[6]
          embedding_configs=embedding_configs,
      )
      trec_tracer = Tracer(["ComputeJTDictToKJT"])
      graph: torch.fx.Graph = trec_tracer.trace(mcc)
      gm: torch.fx.GraphModule = torch.fx.GraphModule(mcc, graph)
      gm.print_readable()
  
file_path: torchrec/torchrec/modules/tests/test_mc_embedding_modules.py
imports: import unittest
  from copy import deepcopy
  from typing import cast, Dict, List, Optional
  import torch
  from torchrec.modules.embedding_configs import EmbeddingBagConfig, EmbeddingConfig
  from torchrec.modules.embedding_modules import EmbeddingBagCollection, EmbeddingCollection
  from torchrec.modules.mc_embedding_modules import ManagedCollisionEmbeddingBagCollection, ManagedCollisionEmbeddingCollection
  from torchrec.modules.mc_modules import DistanceLFU_EvictionPolicy, ManagedCollisionCollection, ManagedCollisionModule, MCHManagedCollisionModule
  from torchrec.sparse.jagged_tensor import KeyedJaggedTensor, KeyedTensor
label_desc: Use image node_id 3 for calling the MCHManagedCollisionEmbeddingBagCollectionTest obj's underlying member method code with example usage: obj.test_mc_collection_traceable() without return types