code: def __init__(self, scheduler):
      self.scheduler = scheduler
      self._scheduling = cpp.CppScheduling(scheduler)
  
file_path: pytorch/test/inductor/extension_backends/extension_codegen_backend.py
imports: from torch._inductor.codegen import cpp, wrapper
  from torch._inductor.scheduler import BaseScheduling
  from torch._inductor.virtualized import V
label_desc: Use image node_id 1 to create a new ExtensionScheduling object from inherited base classes: BaseScheduling with example: obj = ExtensionScheduling(scheduler)