class_docstr: An abstract cost model with customized methods on the python-side.
  This is the user facing class for function overloading inheritance.
  
  Note: @derived_object is required for proper usage of any inherited class.
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docstr: Load the cost model from given file location.
  
  Parameters
  ----------
  path : str
      The file path.
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code: def load(self, path: str) -> None:
      """Load the cost model from given file location.
  
      Parameters
      ----------
      path : str
          The file path.
      """
      raise NotImplementedError
  
imports: import ctypes
  from typing import Callable, List, Union
  from typing_extensions import Literal
  import numpy
  from tvm._ffi import register_object
  from tvm.runtime import Object
  from ..None import _ffi_api
  from ..runner import RunnerResult
  from ..search_strategy import MeasureCandidate
  from ..tune_context import TuneContext
  from ..utils import _get_default_str
label_desc: Use image node_id 1 for calling the PyCostModel obj's underlying member method code with example usage: obj.load(path) without return types