code: def get_submodels(self):
      submodels = [
          {
              "module": "NHitsMixer",
              "args": {
                  "train_args": {
                      "trainer_args": {
                          "max_epochs": 10,
                          "conf_level": [90, 95],
                      },
                  }
              },
          },
      ]
      return submodels
  
file_path: lightwood/tests/unit_tests/mixer/test_nhits.py
imports: import unittest
  import numpy
  import pandas
  from lightwood.api.types import ProblemDefinition
  from lightwood.api.high_level import json_ai_from_problem, predictor_from_json_ai, JsonAI, code_from_json_ai, predictor_from_code
label_desc: Use image node_id 1 for calling the TestBasic obj's underlying member method code with example usage: obj.get_submodels() and returns: submodels