code: def _check_input_and_output(
      self, input_dict: Dict[str, Any]
  ) -> Dict[str, Any]:
      # check if there is any key other than input in the input_dict
      if len(input_dict) > 1 or "input" not in input_dict:
          raise ValueError(ONLY_ONE_KEY_ALLOWED)
      return self.run(input_dict)
  
imports: import abc
  import time
  import unittest
  from typing import Dict, Any, Type
  import numpy
  import torch
  from ray.rllib.core.models.specs.checker import SpecCheckingError
  from ray.rllib.core.models.specs.checker import convert_to_canonical_format, check_input_specs, check_output_specs
  from ray.rllib.core.models.specs.specs_base import TensorSpec, TypeSpec
  from ray.rllib.core.models.specs.specs_dict import SpecDict
  from ray.rllib.utils.annotations import override
  from ray.rllib.utils.nested_dict import NestedDict
label_desc: Use image node_id 2 for calling the CorrectImplementation obj's underlying member method code with example usage: obj._check_input_and_output(input_dict) and returns: self