code: def __init__(
      self,
      feature_infos: List[CategoricalFeatureInfo],
      feature_dims: List[int],
  ) -> None:
      super().__init__()
      self.feature_infos = feature_infos
      self.feature_dims = feature_dims
  
file_path: gluonts/test/mx/test_mx_serde.py
imports: from typing import List
  import pytest
  import mxnet
  import numpy
  from gluonts.core import serde
  from gluonts.core.component import equals
  from gluonts.pydantic import BaseModel
label_desc: Use image node_id 1 to create a new MyGluonBlock object from inherited base classes: mx.gluon with example: obj = MyGluonBlock(feature_infos, feature_dims)