class_docstr: A context manager that ensures that an MXNet network is operating in a
  hybridized / not hybridized mode.
  
  Parameters
  ----------
  net
      The network whose hybrid mode has to be modified within the enclosing
      context.
  hybridize
      A boolean flag indicating whether the hybrid mode should be set or
      not.
  kwargs
      A dictionary of optional arguments to pass to the `hybridize()` call
      of the enclosed `HybridBlock` network.
code: def __enter__(self):
      self.net.hybridize(active=self.required_mode, **self.kwargs)
      if self.data_batch is not None:
          self.net(*self.data_batch)
  
imports: import inspect
  import tempfile
  from pathlib import Path
  from typing import List, Optional, Tuple, cast, Type
  import mxnet
  from mxnet.gluon.block import _flatten
  from gluonts.core.serde import dump_json, load_json
  from gluonts.mx import Tensor
label_desc: Use image node_id 2 for calling the HybridContext obj's underlying member method code with example usage: obj.__enter__() without return types